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Oval|Natural|GIA

1.21ct K SI1 Oval Natural Diamond

EX • K/SI1 • GIA 1563085723

Certificate GIA 1563085723

Diamond specifications and retailer prices

From £1,329 GBP
As of November 5, 2026
Save £2,326 GBP (64%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,655 GBP 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 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 1563085723. Listed at 16 retailers as of November 5, 2026, with prices from £1,329 to £3,655, a £2,326 spread on the same certified stone. NZ Jewellers lists it at £3,655. 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
SI1
Clarity
Excellent
Cut (retailer stated)

Specifications

Cut (retailer stated)Excellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1563085723
Dimensions8.27 × 5.90 × 3.71 mm
L/W Ratio1.40
Top View
8.27 mm5.90 mm1.21 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1563085723
Side View
Table 62.0%CrownGirdle: STK-THKPavilionCulet: NoneDepth 62.9%

Caratlytics Score

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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 5
Current: £3,655 GBP|Low: £1,329 GBP|High: £3,706 GBP|Avg: £2,048 GBP|-1.4%
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 9£1,329 GBP
Retailer 14£1,329 GBP
Retailer 2£1,579 GBP
Retailer 12£1,748 GBP
Retailer 16£1,748 GBP
Retailer 7£1,765 GBP
Retailer 4£1,829 GBP
Retailer 10£1,852 GBP
Retailer 8£1,860 GBP
Retailer 11£1,900 GBP
Retailer 13£2,017 GBP
Retailer 15£2,134 GBP
Retailer 6£2,202 GBP
Retailer 5£2,564 GBP
Retailer 3£3,083 GBP
NZ Jewellers£3,655 GBP

25 data points across 16 retailers

16 retailers£1,329 GBP to £3,655 GBP

A
Cheapest Retailer
-
£1,329 GBP
A
Retailer 2
-
£1,329 GBP
View
B+
Retailer 3
-
£1,579 GBP
View
B+
Retailer 4
-
£1,748 GBP
View
B+
Retailer 5
-
£1,748 GBP
View
Retailer 6
-
£1,765 GBP
View
Price last confirmed 8 days ago
B+
Retailer 7
-
£1,829 GBP
View
B+
Retailer 8
-
£1,852 GBP
View
Retailer 9
-
£1,860 GBP
View
Price last confirmed 10 days ago
B+
Retailer 10
-
£1,900 GBP
View
B
Retailer 11
-
£2,017 GBP
View
B+
Retailer 12
-
£2,134 GBP
View
B+
Retailer 13
-
£2,202 GBP
View
B
Retailer 14
-
£2,564 GBP
View
B
Retailer 15
-
£3,083 GBP
View
Most Expensive
B
NZ Jewellers
eafc6cb4-42c3-4aa6-a2d3-5c6f47f3ae67 · Nov 5
£3,655 GBP
$4,892 USD
View
15 more retailers have this diamond
Prices start from £1,329 GBPSave up to £2,326 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
£1,329 GBP