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Cushion|Natural|GIA

1.51ct H SI1 Cushion Natural Diamond

EX • H/SI1 • GIA 6545505052

Certificate GIA 6545505052

Diamond specifications and retailer prices

From $4,852 SGD
$3,794 USD
As of November 2, 2026
Save $5,294 SGD (52%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $10,146 SGD at MOH London · As of November 1, 2026
View at MOH London

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 SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6545505052. Listed at 20 retailers as of November 1, 2026, with prices from $4,852 to $10,146, a $5,294 spread on the same certified stone. MOH London lists it at $10,146. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
OriginNatural
Grading LabGIA
CertificateGIA 6545505052
Dimensions6.54 × 6.46 × 4.50 mm
L/W Ratio1.01
Top View
6.54 mm6.46 mm1.51 ctH / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 6545505052
Side View
Table 62.0%CrownGirdle: THK-VTKPavilionCulet: NoneDepth 69.6%

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 2
Current: $10,146 SGD|Low: $4,852 SGD|High: $10,268 SGD|Avg: $6,603 SGD|-0.1%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
November 2, 2026
Retailer 9$4,852 SGD
Retailer 7$5,072 SGD
Retailer 10$5,461 SGD
Retailer 8$5,770 SGD
Retailer 11$6,102 SGD
Retailer 4$6,335 SGD
Retailer 6$6,422 SGD
Retailer 3$7,031 SGD
Retailer 2$7,207 SGD
Retailer 5$7,830 SGD
MOH London$10,146 SGD

43 data points across 11 retailers

20 retailers$4,852 SGD to $10,146 SGD

A
Cheapest Retailer
-
$4,852 SGD
$3,794 USD
A
Retailer 2
-
$4,977 SGD
$3,892 USD
View
A
Retailer 3
-
$5,034 SGD
$3,936 USD
View
A
Retailer 4
-
$5,072 SGD
$3,966 USD
View
Final sale: no returns
A
Retailer 5
-
$5,092 SGD
$3,981 USD
View
A
Retailer 6
-
$5,449 SGD
CA$5,918 CAD
View
A
Retailer 7
-
$5,461 SGD
$4,270 USD
View
A
Retailer 8
-
$5,616 SGD
$4,391 USD
View
B+
Retailer 9
-
$5,770 SGD
$4,512 USD
View
B+
Retailer 10
-
$5,866 SGD
$4,587 USD
View
B+
Retailer 11
-
$6,076 SGD
$4,751 USD
View
B+
Retailer 12
-
$6,102 SGD
$4,771 USD
View
B+
Retailer 13
-
$6,335 SGD
£3,900 GBP
View
Retailer 14
-
$6,422 SGD
A$7,725 AUD
View
Price last confirmed 24 days ago
Retailer 15
-
$7,031 SGD
$5,498 USD
View
Price last confirmed 10 days ago
B+
Retailer 16
-
$7,207 SGD
€5,367 EUR
View
B+
Retailer 17
-
$7,333 SGD
$5,734 USD
View
B
Retailer 18
-
$7,830 SGD
ZAR 98,910 ZAR
View
B
Retailer 19
-
$9,219 SGD
$7,209 USD
View
Price last confirmed 7 days ago
Most Expensive
B
MOH London
8012FE3A7 · Nov 1
$10,146 SGD
£6,247 GBP
View
19 more retailers have this diamond
Prices start from $4,852 SGDSave up to $5,294 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
$4,852 SGD