CaratHunter
Plans
Round|Natural|GIA

1.51ct E SI1 Round Natural Diamond

EX • E/SI1 • GIA 6512752915

Certificate GIA 6512752915

Diamond specifications and retailer prices

From $8,566 SGD
HK$52,200 HKD
As of October 29, 2026
Save $10,697 SGD (56%) vs most expensive(unlock to see where)
19 retailers carry this diamond
Most expensive: $19,264 SGD at NZ Jewellers · As of October 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 6512752915. Listed at 19 retailers as of October 28, 2026, with prices from $8,566 to $19,264, a $10,697 spread on the same certified stone. NZ Jewellers lists it at $19,264. 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°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 6512752915
Dimensions7.41 × 7.36 × 4.47 mm
L/W Ratio1.01
Star length50%
Lower girdle75%
Top View
7.41 mm7.36 mm1.51 ctE / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6512752915
Side View
Table 59.0%Crown 34°Girdle: ThickPavilion 40.6°Culet: NoneDepth 60.5%

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: $19,264 SGD|Low: $8,566 SGD|High: $19,264 SGD|Avg: $11,086 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
October 29, 2026
Retailer 10$8,566 SGD
Retailer 7$8,596 SGD
Retailer 11$9,018 SGD
Retailer 4$9,609 SGD
Retailer 6$9,631 SGD
Retailer 15$9,632 SGD
Retailer 14$10,261 SGD
Retailer 5$10,435 SGD
Retailer 19$10,595 SGD
Retailer 12$10,602 SGD
Retailer 16$10,923 SGD
Retailer 9$11,497 SGD
Retailer 3$12,040 SGD
Retailer 8$12,231 SGD
Retailer 13$12,518 SGD
Retailer 17$12,683 SGD
Retailer 18$13,900 SGD
Retailer 2$16,138 SGD
NZ Jewellers$19,264 SGD

40 data points across 19 retailers

19 retailers$8,566 SGD to $19,264 SGD

A
Cheapest Retailer
-
$8,566 SGD
HK$52,200 HKD
A
Retailer 2
-
$8,596 SGD
$6,705 USD
View
A
Retailer 3
-
$9,018 SGD
$7,034 USD
View
A
Retailer 4
-
$9,609 SGD
$7,495 USD
View
A
Retailer 5
-
$9,631 SGD
$7,512 USD
View
Final sale: no returns
A
Retailer 6
-
$9,632 SGD
$7,513 USD
View
A
Retailer 7
-
$10,261 SGD
$8,004 USD
View
B+
Retailer 8
-
$10,435 SGD
$8,139 USD
View
B+
Retailer 9
-
$10,595 SGD
$8,264 USD
View
A
Retailer 10
-
$10,602 SGD
£6,511 GBP
View
B+
Retailer 11
-
$10,923 SGD
A$13,107 AUD
View
B+
Retailer 12
-
$11,497 SGD
$8,967 USD
View
B+
Retailer 13
-
$12,040 SGD
$9,391 USD
View
B+
Retailer 14
-
$12,231 SGD
$9,540 USD
View
B+
Retailer 15
-
$12,518 SGD
€9,299 EUR
View
B+
Retailer 16
-
$12,683 SGD
$9,892 USD
View
B+
Retailer 17
-
$13,900 SGD
ZAR 175,142 ZAR
View
B
Retailer 18
-
$16,138 SGD
£9,911 GBP
View
Most Expensive
B
NZ Jewellers
6ce93c74-746a-4bb5-80ce-0577f7010937 · Oct 27
$19,264 SGD
$15,025 USD
View
18 more retailers have this diamond
Prices start from $8,566 SGDSave up to $10,697 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
$8,566 SGD