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Oval|Natural|GIA

1.20ct K SI1 Oval Natural Diamond

ID • K/SI1 • GIA 6365749321

Certificate GIA 6365749321

Diamond specifications and retailer prices

From £1,787 GBP
As of November 6, 2026
Save £2,473 GBP (58%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £4,260 GBP at NZ Jewellers · As of November 5, 2026
View at NZ Jewellers

About this 1.2ct natural oval diamond

This 1.2ct natural oval sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade stated by the retailer rather than the lab and certified by GIA 6365749321. Listed at 15 retailers as of November 5, 2026, with prices from £1,787 to £4,260, a £2,473 spread on the same certified stone. NZ Jewellers lists it at £4,260. 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
K
Colour
SI1
Clarity
Ideal
Cut (retailer stated)

Specifications

Cut (retailer stated)Ideal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
OriginNatural
Grading LabGIA
CertificateGIA 6365749321
Dimensions8.36 × 5.96 × 3.66 mm
L/W Ratio1.40
Top View
8.36 mm5.96 mm1.20 ctK / SI1
OriginNatural
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6365749321
Side View
Table 59.0%CrownGirdle: THN-STKPavilionCulet: NoneDepth 61.3%

Caratlytics Score

How it works →
B+
Very Good
Strong quality and value balance
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Nov 6
Current: £4,260 GBP|Low: £2,006 GBP|High: £4,260 GBP|Avg: £2,563 GBP
NZ Jewellers
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
November 6, 2026
Retailer 8£2,006 GBP
Retailer 10£2,038 GBP
Retailer 7£2,101 GBP
Retailer 6£2,116 GBP
Retailer 3£2,157 GBP
Retailer 9£2,351 GBP
Retailer 4£2,487 GBP
Retailer 2£2,530 GBP
Retailer 5£3,476 GBP
NZ Jewellers£4,260 GBP

45 data points across 10 retailers

15 retailers£1,787 GBP to £4,260 GBP

B+
Cheapest Retailer
-
£1,787 GBP
B+
Retailer 2
-
£1,825 GBP
View
B+
Retailer 3
-
£1,888 GBP
View
B
Retailer 4
-
£2,006 GBP
View
Retailer 5
-
£2,038 GBP
View
Price last confirmed 8 days ago
B+
Retailer 6
-
£2,038 GBP
View
B+
Retailer 7
-
£2,101 GBP
View
B+
Retailer 8
-
£2,116 GBP
View
B+
Retailer 9
-
£2,143 GBP
View
B+
Retailer 10
-
£2,157 GBP
View
B
Retailer 11
-
£2,351 GBP
View
B
Retailer 12
-
£2,487 GBP
View
B
Retailer 13
-
£2,530 GBP
View
B
Retailer 14
-
£3,476 GBP
View
Most Expensive
B
NZ Jewellers
ad48bb8c-3d38-4bf6-abac-730706f6c1bb · Nov 5
£4,260 GBP
$5,702 USD
View
14 more retailers have this diamond
Prices start from £1,787 GBPSave up to £2,473 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.

B+
1.20ct Oval
£1,787 GBP