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Oval|Natural|GIA

1.21ct G SI1 Oval Natural Diamond

ID • G/SI1 • GIA 6511725679

Certificate GIA 6511725679

Diamond specifications and retailer prices

From $5,091 SGD
As of November 7, 2026
Save $5,630 SGD (53%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $10,721 SGD at NZ Jewellers · As of November 7, 2026
View at NZ Jewellers

About this 1.21ct natural oval diamond

This 1.21ct natural oval sits in the classic one-carat band, graded G 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 6511725679. Listed at 17 retailers as of November 7, 2026, with prices from $5,091 to $10,721, a $5,630 spread on the same certified stone. NZ Jewellers lists it at $10,721. 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
G
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
Crown angle37.47°
Pavilion angle41.17°
OriginNatural
Grading LabGIA
CertificateGIA 6511725679
Dimensions8.41 × 5.92 × 3.77 mm
L/W Ratio1.42
Top View
8.41 mm5.92 mm1.21 ctG / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryVery Good
FluorescenceMedium
CertificateGIA 6511725679
Side View
Table 62.0%Crown 37.47°GirdlePavilion 41.17°Culet: NoneDepth 63.7%

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: $10,721 SGD|Low: $5,206 SGD|High: $10,721 SGD|Avg: $6,741 SGD|+2.5%
NZ Jewellers
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
Retailer 17
Retailer 18
November 7, 2026
Retailer 5$5,255 SGD
Retailer 10$5,322 SGD
Retailer 3$5,367 SGD
Retailer 6$5,552 SGD
Retailer 11$5,649 SGD
Retailer 18$5,680 SGD
Retailer 12$6,008 SGD
Retailer 8$6,153 SGD
Retailer 9$6,153 SGD
Retailer 17$6,153 SGD
Retailer 4$6,203 SGD
Retailer 2$6,217 SGD
Retailer 14$6,719 SGD
Retailer 16$6,962 SGD
Retailer 7$7,100 SGD
Retailer 15$7,508 SGD
Retailer 13$9,748 SGD
NZ Jewellers$10,721 SGD

43 data points across 18 retailers

17 retailers$5,091 SGD to $10,721 SGD

B+
Cheapest Retailer
-
$5,091 SGD
B+
Retailer 2
-
$5,255 SGD
View
B+
Retailer 3
-
$5,367 SGD
View
B+
Retailer 4
-
$5,552 SGD
View
B
Retailer 5
-
$5,649 SGD
View
B
Retailer 6
-
$5,680 SGD
View
Final sale: no returns
B+
Retailer 7
-
$6,008 SGD
View
B
Retailer 8
-
$6,153 SGD
View
B
Retailer 9
-
$6,153 SGD
View
B
Retailer 10
-
$6,153 SGD
View
Retailer 11
-
$6,203 SGD
View
Price last confirmed 29 days ago
B
Retailer 12
-
$6,217 SGD
View
B
Retailer 13
-
$6,962 SGD
View
B
Retailer 14
-
$7,100 SGD
View
B
Retailer 15
-
$7,508 SGD
View
B
Retailer 16
-
$9,748 SGD
View
Most Expensive
B
NZ Jewellers
458523b9-179c-4233-9777-1cc57f56e8aa · Nov 7
$10,721 SGD
$8,365 USD
View
16 more retailers have this diamond
Prices start from $5,091 SGDSave up to $5,630 SGD

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 Oval
$5,091 SGD