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Cushion|Natural|GIA

1.51ct H SI1 Cushion Natural Diamond

VG • H/SI1 • GIA 1257122355

Certificate GIA 1257122355

Diamond specifications and retailer prices

From $9,368 SGD
$7,325 USD
As of November 2, 2026
Save $8,247 SGD (47%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $17,614 SGD at MOH London · As of November 2, 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 very-good cut grade stated by the retailer rather than the lab and certified by GIA 1257122355. Listed at 20 retailers as of November 2, 2026, with prices from $9,368 to $17,614, a $8,247 spread on the same certified stone. MOH London lists it at $17,614. Cut grade matters more than carat or clarity for visible brilliance. If you can shift budget toward an Excellent or Ideal cut, do it before chasing higher colour or clarity.

The 4Cs

1.51
Carat
H
Colour
SI1
Clarity
Very Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Very Good
PolishVery Good
SymmetryGood
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1257122355
Dimensions6.67 × 6.35 × 4.29 mm
L/W Ratio1.05
Top View
6.67 mm6.35 mm1.51 ctH / SI1
OriginNatural
CutVery Good
PolishVery Good
SymmetryGood
FluorescenceNone
CertificateGIA 1257122355
Side View
Table 65.0%CrownGirdle: MED-EXTPavilionCulet: NoneDepth 67.5%

Caratlytics Score

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B
Good
Decent quality, room for better deals
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 2
Current: $17,614 SGD|Low: $9,368 SGD|High: $17,827 SGD|Avg: $12,054 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 3$9,368 SGD
Retailer 7$9,425 SGD
Retailer 8$9,897 SGD
Retailer 11$10,570 SGD
Retailer 9$10,756 SGD
Retailer 6$11,681 SGD
Retailer 10$11,791 SGD
Retailer 4$11,807 SGD
Retailer 2$13,124 SGD
Retailer 5$15,528 SGD
MOH London$17,614 SGD

44 data points across 11 retailers

20 retailers$9,368 SGD to $17,614 SGD

B
Cheapest Retailer
-
$9,368 SGD
$7,325 USD
B
Retailer 2
-
$9,425 SGD
$7,370 USD
View
B
Retailer 3
-
$9,837 SGD
$7,692 USD
View
B
Retailer 4
-
$9,897 SGD
$7,739 USD
View
B
Retailer 5
-
$10,183 SGD
$7,962 USD
View
B
Retailer 6
-
$10,307 SGD
CA$11,193 CAD
View
B
Retailer 7
-
$10,513 SGD
$8,220 USD
View
B
Retailer 8
-
$10,570 SGD
$8,265 USD
View
B
Retailer 9
-
$10,756 SGD
$8,410 USD
View
Retailer 10
-
$11,681 SGD
A$14,052 AUD
View
Price last confirmed 9 days ago
B
Retailer 11
-
$11,791 SGD
$9,220 USD
View
B
Retailer 12
-
$11,807 SGD
£7,269 GBP
View
B
Retailer 13
-
$12,152 SGD
$9,502 USD
View
B
Retailer 14
-
$12,520 SGD
$9,790 USD
View
B
Retailer 15
-
$12,520 SGD
$9,790 USD
View
B
Retailer 16
-
$12,930 SGD
$10,110 USD
View
B
Retailer 17
-
$13,124 SGD
€9,773 EUR
View
Retailer 18
-
$13,914 SGD
$10,880 USD
View
Price last confirmed 10 days ago
B
Retailer 19
-
$15,528 SGD
ZAR 196,151 ZAR
View
Most Expensive
B
MOH London
353BC0986 · Nov 2
$17,614 SGD
£10,845 GBP
View
19 more retailers have this diamond
Prices start from $9,368 SGDSave up to $8,247 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.

B
1.51ct Cushion
$9,368 SGD