Oval|Natural|GIA

1.20ct K SI1 Oval Natural Diamond

EX • K/SI1 • GIA 6542557206

Certificate GIA 6542557206

Diamond specifications and retailer prices

From £1,188 GBP
As of November 6, 2026
Save £219 GBP (16%) vs most expensive(unlock to see where)
15 retailers carry this diamond
Most expensive: £3,318 GBP at NZ Jewellers · As of September 25, 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 6542557206. Listed at 15 retailers as of November 6, 2026, with a relatively tight 18% spread, which is unusual at this carat range and suggests competitive pricing across the listings. 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
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Pavilion angle39.3°
OriginNatural
Grading LabGIA
CertificateGIA 6542557206
Dimensions8.05 × 5.79 × 3.81 mm
L/W Ratio1.39
Top View
8.05 mm5.79 mm1.20 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 6542557206
Side View
Table 60.0%CrownGirdle: THK-VTKPavilion 39.3°Culet: NoneDepth 65.8%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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Price History

Last verified: Nov 6
Current: £1,352 GBP|Low: £947 GBP|High: £2,383 GBP|Avg: £1,414 GBP|+0.2%
Retailer 1
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
November 5, 2026
Retailer 14£947 GBP
Retailer 12£1,061 GBP
Retailer 15£1,069 GBP
Retailer 4£1,076 GBP
Retailer 13£1,115 GBP
Retailer 8£1,188 GBP
Retailer 11£1,192 GBP
Retailer 9£1,214 GBP
Retailer 6£1,260 GBP
Retailer 1£1,352 GBP
Retailer 3£1,401 GBP
Retailer 10£1,542 GBP
Retailer 5£1,733 GBP
Retailer 2£1,928 GBP
Retailer 7£2,251 GBP

31 data points across 15 retailers

15 retailers£1,188 GBP to £1,407 GBP

Retailer 1
-
£947 GBP
Price last confirmed 12 days ago
Retailer 2
-
£1,061 GBP
View
Price last confirmed 14 days ago
Retailer 3
-
£1,076 GBP
View
Price last confirmed 13 days ago
Retailer 4
-
£1,115 GBP
View
Price last confirmed 16 days ago
A
Retailer 5
-
£1,188 GBP
View
Retailer 6
-
£1,192 GBP
View
Price last confirmed 15 days ago
Retailer 7
-
£1,214 GBP
View
Price last confirmed 14 days ago
A
Retailer 8
-
£1,352 GBP
View
Retailer 9
-
£1,401 GBP
View
Price last confirmed 16 days ago
B+
Retailer 10
-
£1,407 GBP
View
Retailer 11
-
£1,490 GBP
View
Price last confirmed 44 days ago
Retailer 12
-
£1,542 GBP
View
Price last confirmed 15 days ago
Retailer 13
-
£1,928 GBP
View
Price last confirmed 16 days ago
Retailer 14
-
£2,251 GBP
View
Price last confirmed 16 days ago
Most Expensive
NZ Jewellers
c32a7255-537e-4f9e-870b-c9dfb57e7829 · Sep 25
£3,318 GBP
$4,441 USD
View
Price last confirmed 42 days ago
14 more retailers have this diamond
Prices start from £1,188 GBPSave up to £219 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
1.20ct Oval
£1,188 GBP