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Round|Natural|GIA

1.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1538904520

Certificate GIA 1538904520

Diamond specifications and retailer prices

From $9,532 SGD
HK$58,100 HKD
As of October 29, 2026
Save $8,497 SGD (47%) vs most expensive(unlock to see where)
25 retailers carry this diamond
Most expensive: $18,028 SGD at NZ Jewellers · As of October 27, 2026
View at NZ Jewellers

About this 1.51ct natural round diamond

This 1.51ct natural round sits in the one-and-a-half to two carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1538904520. Listed at 25 retailers as of October 27, 2026, with prices from $9,532 to $18,028, a $8,497 spread on the same certified stone. NZ Jewellers lists it at $18,028. SI-grade stones are eye-clean roughly 60 to 70% of the time at this carat range. Check the inclusion plot on the cert and ask the retailer for high-resolution video before buying.

The 4Cs

1.51
Carat
E
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.5°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 1538904520
Dimensions7.31 × 7.26 × 4.57 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle
Top View
7.31 mm7.26 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1538904520
Side View
Table 57.0%Crown 34.5°Girdle: Sli. ThickPavilion 41.4°Culet: NoneDepth 63.0%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: $18,028 SGD|Low: $9,532 SGD|High: $18,028 SGD|Avg: $12,388 SGD
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Retailer 15
Retailer 16
Retailer 17
Retailer 18
Retailer 19
Retailer 20
Retailer 21
Retailer 22
Retailer 23
Retailer 24
Retailer 25
October 29, 2026
Retailer 21$9,532 SGD
Retailer 11$9,555 SGD
Retailer 3$9,679 SGD
Retailer 8$9,988 SGD
Retailer 10$10,034 SGD
Retailer 19$10,657 SGD
Retailer 2$10,718 SGD
Retailer 5$10,718 SGD
Retailer 7$10,946 SGD
Retailer 22$11,526 SGD
Retailer 13$11,567 SGD
Retailer 4$11,610 SGD
Retailer 25$11,789 SGD
Retailer 15$11,875 SGD
Retailer 6$12,240 SGD
Retailer 9$12,240 SGD
Retailer 12$12,650 SGD
Retailer 23$13,258 SGD
Retailer 14$13,400 SGD
Retailer 17$13,521 SGD
Retailer 20$13,823 SGD
Retailer 18$14,240 SGD
Retailer 16$15,610 SGD
Retailer 24$17,956 SGD
NZ Jewellers$18,028 SGD

18 data points across 25 retailers

25 retailers$9,532 SGD to $18,028 SGD

A
Cheapest Retailer
-
$9,532 SGD
HK$58,100 HKD
A
Retailer 2
-
$9,555 SGD
$7,455 USD
View
A
Retailer 3
-
$9,679 SGD
$7,552 USD
View
A
Retailer 4
-
$9,988 SGD
$7,793 USD
View
A
Retailer 5
-
$10,034 SGD
$7,829 USD
View
B+
Retailer 6
-
$10,657 SGD
$8,315 USD
View
B+
Retailer 7
-
$10,718 SGD
$8,362 USD
View
B+
Retailer 8
-
$10,718 SGD
$8,362 USD
View
Final sale: no returns
B+
Retailer 9
-
$10,946 SGD
$8,540 USD
View
B+
Retailer 10
-
$11,526 SGD
$8,993 USD
View
B+
Retailer 11
-
$11,567 SGD
£7,106 GBP
View
B+
Retailer 12
-
$11,610 SGD
$9,058 USD
View
B+
Retailer 13
-
$11,789 SGD
$9,198 USD
View
B+
Retailer 14
-
$11,875 SGD
A$14,253 AUD
View
B+
Retailer 15
-
$12,240 SGD
$9,550 USD
View
B+
Retailer 16
-
$12,240 SGD
$9,550 USD
View
B+
Retailer 17
-
$12,650 SGD
$9,870 USD
View
B+
Retailer 18
-
$13,258 SGD
£8,145 GBP
View
B+
Retailer 19
-
$13,400 SGD
€9,957 EUR
View
B
Retailer 20
-
$13,521 SGD
$10,549 USD
View
B+
Retailer 21
-
$13,823 SGD
$10,785 USD
View
B+
Retailer 22
-
$14,240 SGD
$11,110 USD
View
B+
Retailer 23
-
$15,610 SGD
ZAR 196,753 ZAR
View
B
Retailer 24
-
$17,956 SGD
£11,031 GBP
View
Most Expensive
B
NZ Jewellers
02c63f2b-ddb7-4ac2-8ebd-2141d1ef2b1a · Oct 27
$18,028 SGD
$14,066 USD
View
24 more retailers have this diamond
Prices start from $9,532 SGDSave up to $8,497 SGD

Carat Hunter is not affiliated with, endorsed by, or sponsored by any retailer listed. Retailer information is from publicly available sources and may not be current. Verify details directly with the retailer before purchasing. Return terms as we hold them. Check the retailer's own returns page before you buy.

A
1.51ct Round
$9,532 SGD