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Oval|Natural|GIA

1.21ct K SI2 Oval Natural Diamond

EX • K/SI2 • GIA 6512041258

Certificate GIA 6512041258

Diamond specifications and retailer prices

From £1,080 GBP
As of November 1, 2026
Save £630 GBP (37%) vs most expensive(unlock to see where)
9 retailers carry this diamond
Most expensive: £1,709 GBP at Yorxs · As of November 6, 2026
View at Yorxs

About this 1.21ct natural oval diamond

This 1.21ct natural oval sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6512041258. Listed at 9 retailers as of November 1, 2026, with prices from £1,080 to £1,709, a £630 spread on the same certified stone. Yorxs lists it at £1,709. 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
K
Colour
SI2
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle39.36°
Pavilion angle38.36°
OriginNatural
Grading LabGIA
CertificateGIA 6512041258
Dimensions8.43 × 5.99 × 3.63 mm
L/W Ratio1.41
Top View
8.43 mm5.99 mm1.21 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6512041258
Side View
Table 59.0%Crown 39.36°Girdle: STK-THKPavilion 38.36°Culet: NoneDepth 60.7%

Caratlytics Score

How it works →
A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 1
Current: £1,697 GBP|Low: £1,080 GBP|High: £1,788 GBP|Avg: £1,304 GBP|+1.3%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Yorxs
November 6, 2026
Retailer 3£1,080 GBP
Retailer 7£1,095 GBP
Retailer 6£1,112 GBP
Retailer 5£1,123 GBP
Retailer 8£1,142 GBP
Retailer 4£1,351 GBP
Retailer 2£1,401 GBP
Retailer 1£1,697 GBP
Yorxs£1,709 GBP

39 data points across 9 retailers

9 retailers£1,080 GBP to £1,709 GBP

A
Cheapest Retailer
-
£1,080 GBP
A
Retailer 2
-
£1,095 GBP
View
A
Retailer 3
-
£1,112 GBP
View
A
Retailer 4
-
£1,123 GBP
View
A
Retailer 5
-
£1,142 GBP
View
B+
Retailer 6
-
£1,351 GBP
View
B+
Retailer 7
-
£1,401 GBP
View
B+
Retailer 8
-
£1,697 GBP
View
Most Expensive
B+
Yorxs
488440496 · Nov 6
£1,709 GBP
€2,179 EUR
View
8 more retailers have this diamond
Prices start from £1,080 GBPSave up to £630 GBP

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
£1,080 GBP