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Cushion|Natural|GIA

1.30ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 6452784031

Certificate GIA 6452784031

Diamond specifications and retailer prices

From HK$21,362 HKD
$2,723 USD
As of October 31, 2026
Save HK$11,433 HKD (35%) vs most expensive(unlock to see where)
6 retailers carry this diamond
Most expensive: HK$32,795 HKD at 77 Diamonds · As of November 1, 2026
View at 77 Diamonds

About this 1.3ct natural cushion diamond

This 1.3ct natural cushion sits in the one-and-a-quarter to one-and-a-half 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 6452784031. Listed at 6 retailers as of October 31, 2026, with prices from HK$21,362 to HK$32,795, a HK$11,433 spread on the same certified stone. 77 Diamonds lists it at HK$32,795. 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

1.30
Carat
I
Colour
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6452784031
Dimensions6.20 × 6.15 × 4.19 mm
L/W Ratio1.01
Top View
6.20 mm6.15 mm1.30 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6452784031
Side View
Table 65.0%CrownGirdle: MED-THKPavilionCulet: NoneDepth 68.2%

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$32,795 HKD|Low: HK$21,451 HKD|High: HK$32,918 HKD|Avg: HK$25,927 HKD|+2.1%
77 Diamonds
Retailer 2
Retailer 3
November 1, 2026
Retailer 2HK$21,749 HKD
Retailer 3HK$23,397 HKD
77 DiamondsHK$32,795 HKD

38 data points across 3 retailers

6 retailersHK$21,362 HKD to HK$32,795 HKD

A
Cheapest Retailer
-
HK$21,362 HKD
$2,723 USD
A
Retailer 2
-
HK$21,483 HKD
$2,738 USD
View
A
Retailer 3
-
HK$21,749 HKD
$2,772 USD
View
A
Retailer 4
-
HK$22,412 HKD
A$4,395 AUD
View
B+
Retailer 5
-
HK$23,397 HKD
$2,982 USD
View
Most Expensive
B+
77 Diamonds
CUSZ8YYYFYYJ · Nov 1
HK$32,795 HKD
£3,291 GBP
View
5 more retailers have this diamond
Prices start from HK$21,362 HKDSave up to HK$11,433 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
1.30ct Cushion
HK$21,362 HKD