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Cushion|Natural|GIA

1.21ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 5242003538

Certificate GIA 5242003538

Diamond specifications and retailer prices

From HK$17,360 HKD
As of November 7, 2026
Save HK$13,755 HKD (44%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: HK$47,307 HKD at Reve Diamonds · As of October 16, 2026
View at Reve Diamonds

About this 1.21ct natural cushion diamond

This 1.21ct natural cushion sits in the classic one-carat band, graded I 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 5242003538. Listed at 12 retailers as of November 5, 2026, with a 79% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.21
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle36.29°
OriginNatural
Grading LabGIA
CertificateGIA 5242003538
Dimensions7.05 × 5.51 × 3.84 mm
L/W Ratio1.28
Key to symbols
Crystal, Feather, Needle
Top View
7.05 mm5.51 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 5242003538
Side View
Table 61.0%CrownGirdle: STK-VTKPavilion 36.29°Culet: NoneDepth 69.7%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
Unlock full score analysis
See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 7
Current: HK$31,114 HKD|Low: HK$11,435 HKD|High: HK$50,175 HKD|Avg: HK$24,089 HKD|+68.4%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
Reve Diamonds
October 29, 2026
Retailer 2HK$11,435 HKD
Retailer 4HK$13,896 HKD
Retailer 6HK$15,252 HKD
Retailer 5HK$16,082 HKD
Retailer 7HK$23,175 HKD
Retailer 3HK$24,029 HKD
Retailer 14HK$27,893 HKD
Retailer 1HK$31,114 HKD
Retailer 13HK$39,352 HKD
Retailer 9HK$40,190 HKD
Retailer 10HK$40,402 HKD
Retailer 8HK$42,988 HKD
Retailer 12HK$45,379 HKD
Reve DiamondsHK$47,307 HKD
Retailer 11HK$50,175 HKD

33 data points across 15 retailers

12 retailersHK$17,360 HKD to HK$31,114 HKD

Retailer 1
-
HK$11,435 HKD
Price last confirmed 24 days ago
Retailer 2
-
HK$13,896 HKD
View
Price last confirmed 24 days ago
Retailer 3
-
HK$16,082 HKD
View
Price last confirmed 23 days ago
B+
Retailer 4
-
HK$17,360 HKD
View
Retailer 5
-
HK$22,885 HKD
View
Price last confirmed 14 days ago
Retailer 6
-
HK$23,175 HKD
View
Price last confirmed 12 days ago
Retailer 7
-
HK$24,029 HKD
View
Price last confirmed 24 days ago
Retailer 8
-
HK$27,893 HKD
View
Price last confirmed 23 days ago
B
Retailer 9
-
HK$31,114 HKD
View
Retailer 10
-
HK$39,352 HKD
View
Price last confirmed 22 days ago
Retailer 11
-
HK$40,190 HKD
View
Price last confirmed 22 days ago
Most Expensive
Reve Diamonds
E0B44E40B · Oct 16
HK$47,307 HKD
$6,036 USD
View
Price last confirmed 21 days ago
11 more retailers have this diamond
Prices start from HK$17,360 HKDSave up to HK$13,755 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.

B+
1.21ct Cushion
HK$17,360 HKD