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Cushion|Natural|GIA

1.51ct H SI2 Cushion Natural Diamond

EX • H/SI2 • GIA 2554189099

Certificate GIA 2554189099

Diamond specifications and retailer prices

From HK$17,424 HKD
SGD 3,001 SGD
As of October 31, 2026
Save HK$15,098 HKD (46%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$32,522 HKD at Helzberg Diamonds · As of November 1, 2026
View at Helzberg 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 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 2554189099. Listed at 12 retailers as of October 31, 2026, with prices from HK$17,424 to HK$32,522, a HK$15,098 spread on the same certified stone. Helzberg Diamonds lists it at HK$32,522. 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
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 2554189099
Dimensions6.87 × 6.11 × 4.21 mm
L/W Ratio1.12
Top View
6.87 mm6.11 mm1.51 ctH / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554189099
Side View
Table 62.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 68.9%

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$32,522 HKD|Low: HK$17,424 HKD|High: HK$35,276 HKD|Avg: HK$23,563 HKD|-7.8%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
November 2, 2026
Retailer 9HK$17,424 HKD
Retailer 7HK$18,603 HKD
Retailer 6HK$18,926 HKD
Retailer 4HK$20,361 HKD
Retailer 2HK$20,448 HKD
Retailer 12HK$20,606 HKD
Retailer 10HK$22,275 HKD
Retailer 8HK$22,440 HKD
Retailer 11HK$23,266 HKD
Retailer 5HK$26,692 HKD
Retailer 3HK$32,380 HKD
Helzberg DiamondsHK$32,522 HKD

28 data points across 12 retailers

12 retailersHK$17,424 HKD to HK$32,522 HKD

A
Cheapest Retailer
-
HK$17,424 HKD
SGD 3,001 SGD
A
Retailer 2
-
HK$18,603 HKD
$2,371 USD
View
A
Retailer 3
-
HK$18,926 HKD
$2,412 USD
View
A
Retailer 4
-
HK$20,361 HKD
$2,595 USD
View
A
Retailer 5
-
HK$20,448 HKD
£2,052 GBP
View
A
Retailer 6
-
HK$20,606 HKD
SGD 3,549 SGD
View
A
Retailer 7
-
HK$22,275 HKD
$2,839 USD
View
A
Retailer 8
-
HK$22,440 HKD
$2,860 USD
View
A
Retailer 9
-
HK$23,266 HKD
$2,965 USD
View
A
Retailer 10
-
HK$26,692 HKD
$3,402 USD
View
A
Retailer 11
-
HK$32,380 HKD
$4,127 USD
View
Most Expensive
A
Helzberg Diamonds
XZRILLKHOPGPP · Nov 1
HK$32,522 HKD
$4,145 USD
View
11 more retailers have this diamond
Prices start from HK$17,424 HKDSave up to HK$15,098 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$17,424 HKD