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Cushion|Natural|GIA

1.51ct H SI2 Cushion Natural Diamond

EX • H/SI2 • GIA 6551533295

Certificate GIA 6551533295

Diamond specifications and retailer prices

From $4,518 SGD
HK$27,600 HKD
As of November 1, 2026
Save $6,478 SGD (59%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: $10,996 SGD at Queensmith · As of October 28, 2026
View at Queensmith

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded H colour (near-colourless) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6551533295. Listed at 15 retailers as of October 28, 2026, with prices from $4,518 to $10,996, a $6,478 spread on the same certified stone. Queensmith lists it at $10,996. 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
H
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6551533295
Dimensions7.61 × 5.86 × 4.02 mm
L/W Ratio1.30
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle, Indented Natural, Natural
Top View
7.61 mm5.86 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 6551533295
Side View
Table 64.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 68.6%

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: Nov 1
Current: $10,996 SGD|Low: $4,485 SGD|High: $11,061 SGD|Avg: $6,528 SGD|+2.3%
Queensmith
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 2, 2026
Retailer 10$4,518 SGD
Retailer 2$4,833 SGD
Retailer 5$5,322 SGD
Retailer 3$5,571 SGD
Retailer 12$5,749 SGD
Retailer 6$5,848 SGD
Retailer 8$6,002 SGD
Retailer 11$6,036 SGD
Retailer 4$6,228 SGD
Retailer 13$6,388 SGD
Retailer 7$6,830 SGD
Retailer 9$9,614 SGD
Queensmith$10,996 SGD

24 data points across 13 retailers

15 retailers$4,518 SGD to $10,996 SGD

A
Cheapest Retailer
-
$4,518 SGD
HK$27,600 HKD
A
Retailer 2
-
$4,833 SGD
₹359,882 INR
View
A
Retailer 3
-
$5,322 SGD
View
B+
Retailer 4
-
$5,534 SGD
$4,327 USD
View
A
Retailer 5
-
$5,571 SGD
$4,356 USD
View
Final sale: no returns
B+
Retailer 6
-
$5,749 SGD
View
A
Retailer 7
-
$5,848 SGD
£3,600 GBP
View
B+
Retailer 8
-
$6,002 SGD
£3,695 GBP
View
B+
Retailer 9
-
$6,036 SGD
$4,720 USD
View
B+
Retailer 10
-
$6,200 SGD
A$7,458 AUD
View
B+
Retailer 11
-
$6,228 SGD
$4,870 USD
View
B+
Retailer 12
-
$6,388 SGD
$4,995 USD
View
B+
Retailer 13
-
$6,830 SGD
€5,086 EUR
View
B
Retailer 14
-
$9,614 SGD
£5,919 GBP
View
Most Expensive
B
Queensmith
6551533295 · Oct 28
$10,996 SGD
£6,770 GBP
View
14 more retailers have this diamond
Prices start from $4,518 SGDSave up to $6,478 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 Cushion
$4,518 SGD