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Oval|Natural|GIA

1.21ct I SI1 Oval Natural Diamond

EX • I/SI1 • GIA 2568507379

Certificate GIA 2568507379

Diamond specifications and retailer prices

From HK$20,119 HKD
As of November 5, 2026
Save HK$17,242 HKD (46%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: HK$37,361 HKD at Helzberg Diamonds · As of November 6, 2026
View at Helzberg Diamonds

About this 1.21ct natural oval diamond

This 1.21ct natural oval 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 2568507379. Listed at 15 retailers as of November 5, 2026, with prices from HK$20,119 to HK$37,361, a HK$17,242 spread on the same certified stone. Helzberg Diamonds lists it at HK$37,361. 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
FluorescenceMedium
Crown angle35.9°
Pavilion angle38.65°
OriginNatural
Grading LabGIA
CertificateGIA 2568507379
Dimensions8.46 × 6.04 × 3.65 mm
L/W Ratio1.40
Culet sizeNone
Top View
8.46 mm6.04 mm1.21 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 2568507379
Side View
Table 58.0%Crown 35.9°Girdle: STK-THKPavilion 38.65°Culet: NDepth 60.4%

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 5
Current: HK$37,361 HKD|Low: HK$19,868 HKD|High: HK$37,361 HKD|Avg: HK$26,185 HKD
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
Retailer 15
Retailer 16
November 6, 2026
Retailer 11HK$20,119 HKD
Retailer 15HK$21,365 HKD
Retailer 12HK$21,443 HKD
Retailer 5HK$21,561 HKD
Retailer 14HK$21,592 HKD
Retailer 7HK$21,725 HKD
Retailer 10HK$23,214 HKD
Retailer 6HK$23,653 HKD
Retailer 16HK$25,385 HKD
Retailer 9HK$26,177 HKD
Retailer 8HK$26,185 HKD
Retailer 2HK$27,251 HKD
Retailer 13HK$27,454 HKD
Retailer 4HK$33,121 HKD
Retailer 3HK$35,378 HKD
Helzberg DiamondsHK$37,361 HKD

25 data points across 16 retailers

15 retailersHK$20,119 HKD to HK$37,361 HKD

A
Cheapest Retailer
-
HK$20,119 HKD
B+
Retailer 2
-
HK$21,365 HKD
View
B+
Retailer 3
-
HK$21,443 HKD
View
B+
Retailer 4
-
HK$21,561 HKD
View
B+
Retailer 5
-
HK$21,592 HKD
View
B+
Retailer 6
-
HK$21,725 HKD
View
B+
Retailer 7
-
HK$23,214 HKD
View
B+
Retailer 8
-
HK$23,653 HKD
View
B+
Retailer 9
-
HK$25,385 HKD
View
B+
Retailer 10
-
HK$26,177 HKD
View
B
Retailer 11
-
HK$26,185 HKD
View
B+
Retailer 12
-
HK$27,251 HKD
View
B
Retailer 13
-
HK$33,121 HKD
View
B
Retailer 14
-
HK$35,378 HKD
View
Most Expensive
B
Helzberg Diamonds
XZRILMOLGNJNP · Nov 6
HK$37,361 HKD
$4,767 USD
View
14 more retailers have this diamond
Prices start from HK$20,119 HKDSave up to HK$17,242 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
1.21ct Oval
HK$20,119 HKD