Oval|Natural|GIA

1.21ct G SI1 Oval Natural Diamond

ID • G/SI1 • GIA 6511725679

Certificate GIA 6511725679

Diamond specifications and retailer prices

From $4,100 USD
As of November 6, 2026
Save $4,265 USD (51%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $8,365 USD at NZ Jewellers · As of November 5, 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 14 retailers as of November 5, 2026, with prices from $4,100 to $8,365, a $4,265 spread on the same certified stone. NZ Jewellers lists it at $8,365. 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
Color
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 6
Current: $8,365 USD|Low: $3,987 USD|High: $8,365 USD|Avg: $5,178 USD|+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
November 6, 2026
Retailer 8$3,987 USD
Retailer 16$4,100 USD
Retailer 7$4,153 USD
Retailer 14$4,188 USD
Retailer 3$4,332 USD
Retailer 13$4,432 USD
Retailer 2$4,658 USD
Retailer 5$4,801 USD
Retailer 6$4,801 USD
Retailer 12$4,801 USD
Retailer 15$4,840 USD
Retailer 11$5,432 USD
Retailer 4$5,540 USD
Retailer 9$5,858 USD
Retailer 10$7,627 USD
NZ Jewellers$8,365 USD

43 data points across 16 retailers

14 retailers$4,100 USD to $8,365 USD

B+
Cheapest Retailer
-
$4,100 USD
B+
Retailer 2
-
$4,188 USD
View
B+
Retailer 3
-
$4,332 USD
View
B
Retailer 4
-
$4,432 USD
View
Final sale: no returns
B+
Retailer 5
-
$4,658 USD
View
B
Retailer 6
-
$4,801 USD
View
B
Retailer 7
-
$4,801 USD
View
Retailer 8
-
$4,801 USD
View
Price last confirmed 8 days ago
Retailer 9
-
$4,840 USD
View
Price last confirmed 28 days ago
B
Retailer 10
-
$5,432 USD
View
B
Retailer 11
-
$5,540 USD
View
B
Retailer 12
-
$5,858 USD
View
B
Retailer 13
-
$7,627 USD
View
Most Expensive
B
NZ Jewellers
458523b9-179c-4233-9777-1cc57f56e8aa · Nov 5
$8,365 USD
View
13 more retailers have this diamond
Prices start from $4,100 USDSave up to $4,265 USD

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
$4,100 USD