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Cushion|Natural|GIA

1.51ct D SI1 Cushion Natural Diamond

ID • D/SI1 • GIA 6555094950

Certificate GIA 6555094950

Diamond specifications and retailer prices

From HK$41,576 HKD
As of November 1, 2026
Save HK$40,528 HKD (49%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: HK$82,104 HKD 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 D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6555094950. Listed at 18 retailers as of October 28, 2026, with prices from HK$41,576 to HK$82,104, a HK$40,528 spread on the same certified stone. Queensmith lists it at HK$82,104. 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
D
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 6555094950
Dimensions7.66 × 5.89 × 4.00 mm
L/W Ratio1.30
Top View
7.66 mm5.89 mm1.51 ctD / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555094950
Side View
Table 68.0%CrownGirdle: STK-VTKPavilionCulet: 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: Nov 1
Current: HK$82,104 HKD|Low: HK$41,275 HKD|High: HK$83,200 HKD|Avg: HK$58,536 HKD|+1.2%
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 10HK$41,576 HKD
Retailer 7HK$44,317 HKD
Retailer 3HK$46,352 HKD
Retailer 5HK$48,995 HKD
Retailer 11HK$50,644 HKD
Retailer 6HK$52,622 HKD
Retailer 12HK$53,743 HKD
Retailer 4HK$53,806 HKD
Retailer 13HK$56,131 HKD
Retailer 2HK$59,940 HKD
Retailer 9HK$67,416 HKD
Retailer 8HK$80,838 HKD
QueensmithHK$82,104 HKD

28 data points across 13 retailers

18 retailersHK$41,576 HKD to HK$82,104 HKD

A
Cheapest Retailer
-
HK$41,576 HKD
A
Retailer 2
-
HK$44,317 HKD
₹537,956 INR
View
A
Retailer 3
-
HK$46,352 HKD
$5,908 USD
View
Retailer 4
-
HK$47,747 HKD
SGD 8,224 SGD
View
Price last confirmed 18 days ago
A
Retailer 5
-
HK$48,995 HKD
SGD 8,439 SGD
View
A
Retailer 6
-
HK$50,644 HKD
$6,455 USD
View
Final sale: no returns
B+
Retailer 7
-
HK$50,942 HKD
$6,493 USD
View
B+
Retailer 8
-
HK$50,958 HKD
$6,495 USD
View
Retailer 9
-
HK$51,491 HKD
$6,563 USD
View
Price last confirmed 17 days ago
B+
Retailer 10
-
HK$52,622 HKD
£5,281 GBP
View
B+
Retailer 11
-
HK$53,743 HKD
$6,850 USD
View
Retailer 12
-
HK$53,806 HKD
A$10,551 AUD
View
Price last confirmed 11 days ago
B+
Retailer 13
-
HK$56,131 HKD
$7,154 USD
View
B+
Retailer 14
-
HK$58,177 HKD
A$11,408 AUD
View
B+
Retailer 15
-
HK$59,940 HKD
€7,276 EUR
View
B+
Retailer 16
-
HK$67,416 HKD
ZAR 138,816 ZAR
View
B
Retailer 17
-
HK$80,838 HKD
£8,113 GBP
View
Most Expensive
B
Queensmith
6555094950 · Oct 28
HK$82,104 HKD
£8,240 GBP
View
17 more retailers have this diamond
Prices start from HK$41,576 HKDSave up to HK$40,528 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$41,576 HKD