Round|Natural|GIA

1.20ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1563043428

Certificate GIA 1563043428

Diamond specifications and retailer prices

From HK$16,994 HKD
$2,166 USD
As of October 25, 2026
Save HK$5,438 HKD (24%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: HK$31,312 HKD at Helzberg Diamonds · As of October 25, 2026
View at Helzberg Diamonds

About this 1.2ct natural round diamond

This 1.2ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1563043428. Listed at 14 retailers as of October 25, 2026, with a 32% 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

1.20
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36.5°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1563043428
Dimensions6.77 × 6.79 × 4.23 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.77 mm6.79 mm1.20 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 1563043428
Side View
Table 57.0%Crown 36.5°Girdle: MED-STKPavilion 40.8°Culet: NoneDepth 62.3%

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 25
Current: HK$31,312 HKD|Low: HK$16,082 HKD|High: HK$32,921 HKD|Avg: HK$21,887 HKD|-3.8%
Helzberg Diamonds
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
Retailer 14
October 26, 2026
Retailer 13HK$16,082 HKD
Retailer 11HK$16,994 HKD
Retailer 9HK$17,315 HKD
Retailer 12HK$17,464 HKD
Retailer 8HK$17,496 HKD
Retailer 7HK$18,349 HKD
Retailer 5HK$19,008 HKD
Retailer 14HK$20,642 HKD
Retailer 4HK$21,742 HKD
Retailer 10HK$21,871 HKD
Retailer 2HK$22,432 HKD
Retailer 6HK$26,620 HKD
Retailer 3HK$28,669 HKD
Helzberg DiamondsHK$31,312 HKD

28 data points across 14 retailers

14 retailersHK$16,994 HKD to HK$22,432 HKD

Retailer 1
-
HK$16,082 HKD
SGD 2,770 SGD
Price last confirmed 8 days ago
A
Retailer 2
-
HK$16,994 HKD
$2,166 USD
View
Retailer 3
-
HK$17,315 HKD
$2,207 USD
View
Price last confirmed 8 days ago
Retailer 4
-
HK$17,464 HKD
$2,226 USD
View
Price last confirmed 8 days ago
Retailer 5
-
HK$17,496 HKD
$2,230 USD
View
Price last confirmed 8 days ago
A
Retailer 6
-
HK$18,349 HKD
£1,841 GBP
View
A
Retailer 7
-
HK$19,008 HKD
SGD 3,274 SGD
View
Retailer 8
-
HK$20,642 HKD
$2,631 USD
View
Price last confirmed 9 days ago
Retailer 9
-
HK$21,742 HKD
$2,771 USD
View
Price last confirmed 9 days ago
A
Retailer 10
-
HK$21,871 HKD
£2,195 GBP
View
A
Retailer 11
-
HK$22,432 HKD
€2,723 EUR
View
Retailer 12
-
HK$26,620 HKD
$3,393 USD
View
Price last confirmed 8 days ago
Retailer 13
-
HK$28,669 HKD
$3,654 USD
View
Price last confirmed 9 days ago
Most Expensive
Helzberg Diamonds
XZRHLMJGKJKIO · Oct 25
HK$31,312 HKD
$3,991 USD
View
Price last confirmed 8 days ago
13 more retailers have this diamond
Prices start from HK$16,994 HKDSave up to HK$5,438 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
1.20ct Round
HK$16,994 HKD