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Cushion|Natural|GIA

1.30ct I SI1 Cushion Natural Diamond

EX • I/SI1 • GIA 1232970786

Certificate GIA 1232970786

Diamond specifications and retailer prices

From HK$20,798 HKD
A$4,078 AUD
As of November 2, 2026
Save HK$8,538 HKD (29%) vs most expensive(unlock to see where)
8 retailers carry this diamond
Most expensive: HK$34,876 HKD at MOH London · As of October 5, 2026
View at MOH London

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 1232970786. Listed at 8 retailers as of November 2, 2026, with a 41% 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

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

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Pavilion angle35.83°
OriginNatural
Grading LabGIA
CertificateGIA 1232970786
Dimensions7.19 × 5.63 × 3.91 mm
L/W Ratio1.28
Key to symbols
Crystal, Needle, Pinpoint
Top View
7.19 mm5.63 mm1.30 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1232970786
Side View
Table 64.0%CrownGirdle: MED-VTKPavilion 35.83°Culet: NoneDepth 69.5%

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 2
Current: HK$34,876 HKD|Low: HK$14,362 HKD|High: HK$35,813 HKD|Avg: HK$21,906 HKD|-2.6%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 2, 2026
Retailer 5HK$14,362 HKD
Retailer 9HK$15,512 HKD
Retailer 4HK$17,302 HKD
Retailer 7HK$18,383 HKD
Retailer 6HK$20,141 HKD
Retailer 10HK$20,798 HKD
Retailer 3HK$24,427 HKD
Retailer 2HK$29,335 HKD
Retailer 8HK$30,235 HKD
MOH LondonHK$34,876 HKD

24 data points across 10 retailers

8 retailersHK$20,798 HKD to HK$29,335 HKD

Retailer 1
-
HK$14,362 HKD
Price last confirmed 25 days ago
Retailer 2
-
HK$17,302 HKD
€2,100 EUR
View
Price last confirmed 27 days ago
Retailer 3
-
HK$18,383 HKD
$2,343 USD
View
Price last confirmed 13 days ago
Retailer 4
-
HK$20,141 HKD
SGD 3,469 SGD
View
Price last confirmed 27 days ago
A
Retailer 5
-
HK$20,798 HKD
A$4,078 AUD
View
B+
Retailer 6
-
HK$29,335 HKD
£2,944 GBP
View
Retailer 7
-
HK$30,235 HKD
€3,670 EUR
View
Price last confirmed 30 days ago
Most Expensive
MOH London
296C0F38D · Oct 5
HK$34,876 HKD
£3,500 GBP
View
Price last confirmed 28 days ago
7 more retailers have this diamond
Prices start from HK$20,798 HKDSave up to HK$8,538 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$20,798 HKD