CaratHunter
Plans
Round|Natural|GIA

1.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 1543994919

Certificate GIA 1543994919

Diamond specifications and retailer prices

From $9,440 SGD
$7,365 USD
As of October 29, 2026
Save $8,005 SGD (46%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $21,606 SGD at NZ Jewellers · As of September 28, 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 1543994919. Listed at 19 retailers as of October 29, 2026, with a 85% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1543994919
Dimensions7.28 × 7.31 × 4.57 mm
L/W Ratio1.00
Culet sizeNone
Top View
7.28 mm7.31 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1543994919
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.7%

Caratlytics Score

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

Price History

Last verified: Oct 29
Current: $9,903 SGD|Low: $8,569 SGD|High: $17,537 SGD|Avg: $11,865 SGD|+15.6%
Retailer 1
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
October 30, 2026
Retailer 15$9,440 SGD
Retailer 4$9,749 SGD
Retailer 1$9,903 SGD
Retailer 16$10,027 SGD
Retailer 3$10,363 SGD
Retailer 5$10,411 SGD
Retailer 2$11,096 SGD
Retailer 7$11,470 SGD
Retailer 12$11,502 SGD
Retailer 9$11,546 SGD
Retailer 10$11,553 SGD
Retailer 6$11,652 SGD
Retailer 14$12,618 SGD
Retailer 8$13,875 SGD
Retailer 13$15,025 SGD
Retailer 11$17,445 SGD

34 data points across 16 retailers

19 retailers$9,440 SGD to $17,445 SGD

A
Cheapest Retailer
-
$9,440 SGD
$7,365 USD
A
Retailer 2
-
$9,749 SGD
$7,606 USD
View
A
Retailer 3
-
$9,903 SGD
$7,727 USD
View
A
Retailer 4
-
$10,027 SGD
$7,823 USD
View
A
Retailer 5
-
$10,363 SGD
$8,085 USD
View
B+
Retailer 6
-
$10,411 SGD
$8,123 USD
View
Final sale: no returns
B+
Retailer 7
-
$11,096 SGD
$8,657 USD
View
Retailer 8
-
$11,470 SGD
$8,949 USD
View
Price last confirmed 7 days ago
B+
Retailer 9
-
$11,502 SGD
A$13,807 AUD
View
B+
Retailer 10
-
$11,546 SGD
£7,093 GBP
View
B+
Retailer 11
-
$11,553 SGD
$9,014 USD
View
B+
Retailer 12
-
$11,652 SGD
$9,091 USD
View
Retailer 13
-
$11,703 SGD
$9,131 USD
View
Price last confirmed 31 days ago
B+
Retailer 14
-
$12,618 SGD
$9,845 USD
View
Retailer 15
-
$13,504 SGD
$10,536 USD
View
Price last confirmed 59 days ago
Retailer 16
-
$13,504 SGD
$10,536 USD
View
Price last confirmed 32 days ago
Retailer 17
-
$15,025 SGD
ZAR 189,383 ZAR
View
Price last confirmed 7 days ago
B
Retailer 18
-
$17,445 SGD
£10,717 GBP
View
Most Expensive
NZ Jewellers
5239c466-c2e3-4e18-a2db-1163951c3b6d · Sep 28
$21,606 SGD
$16,857 USD
View
Price last confirmed 32 days ago
18 more retailers have this diamond
Prices start from $9,440 SGDSave up to $8,005 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
$9,440 SGD