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Cushion|Natural|GIA

1.51ct D SI2 Cushion Natural Diamond

GD • D/SI2 • GIA 1425646526

Certificate GIA 1425646526

Diamond specifications and retailer prices

From HK$27,711 HKD
$3,532 USD
As of October 31, 2026
Save HK$12,227 HKD (31%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: HK$39,938 HKD at 77 Diamonds · As of November 2, 2026
View at 77 Diamonds

About this 1.51ct natural cushion diamond

This 1.51ct natural cushion sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a standard cut grade stated by the retailer rather than the lab and certified by GIA 1425646526. Listed at 11 retailers as of October 31, 2026, with prices from HK$27,711 to HK$39,938, a HK$12,227 spread on the same certified stone. 77 Diamonds lists it at HK$39,938. 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
D
Colour
SI2
Clarity
Good
Cut (retailer stated)

Specifications

Cut (retailer stated)Good
PolishExcellent
SymmetryVery Good
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1425646526
Dimensions6.95 × 6.28 × 4.26 mm
L/W Ratio1.11
Culet sizeNone
Key to symbols
Crystal, Feather
Top View
6.95 mm6.28 mm1.51 ctD / SI2
OriginNatural
CutGood
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateGIA 1425646526
Side View
Table 59.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 67.9%

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 31
Current: HK$39,938 HKD|Low: HK$27,358 HKD|High: HK$40,081 HKD|Avg: HK$35,150 HKD|+2.1%
77 Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
November 2, 2026
Retailer 5HK$27,711 HKD
Retailer 3HK$28,245 HKD
Retailer 4HK$34,811 HKD
Retailer 7HK$36,953 HKD
Retailer 8HK$36,953 HKD
Retailer 6HK$38,209 HKD
Retailer 2HK$38,496 HKD
77 DiamondsHK$39,938 HKD

40 data points across 8 retailers

11 retailersHK$27,711 HKD to HK$39,938 HKD

A
Cheapest Retailer
-
HK$27,711 HKD
$3,532 USD
A
Retailer 2
-
HK$28,292 HKD
$3,606 USD
View
A
Retailer 3
-
HK$28,590 HKD
$3,644 USD
View
A
Retailer 4
-
HK$28,932 HKD
$3,688 USD
View
A
Retailer 5
-
HK$29,994 HKD
A$5,882 AUD
View
B+
Retailer 6
-
HK$34,811 HKD
$4,437 USD
View
B+
Retailer 7
-
HK$36,953 HKD
$4,710 USD
View
B+
Retailer 8
-
HK$36,953 HKD
$4,710 USD
View
B+
Retailer 9
-
HK$38,209 HKD
$4,870 USD
View
B+
Retailer 10
-
HK$38,496 HKD
€4,673 EUR
View
Most Expensive
B+
77 Diamonds
CUSMBKG4TCX2Z · Nov 2
HK$39,938 HKD
£4,008 GBP
View
10 more retailers have this diamond
Prices start from HK$27,711 HKDSave up to HK$12,227 HKD

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
HK$27,711 HKD