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Round|Natural|GIA

1.21ct K SI2 Round Natural Diamond

EX • K/SI2 • GIA 6552463506

Certificate GIA 6552463506

Diamond specifications and retailer prices

From £1,035 GBP
As of November 5, 2026
Save £933 GBP (47%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £1,968 GBP at Wholesale Diamonds Direct · As of November 4, 2026
View at Wholesale Diamonds Direct

About this 1.21ct natural round diamond

This 1.21ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6552463506. Listed at 13 retailers as of November 4, 2026, with prices from £1,035 to £1,968, a £933 spread on the same certified stone. Wholesale Diamonds Direct lists it at £1,968. 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

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.5°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6552463506
Dimensions6.83 × 6.85 × 4.21 mm
L/W Ratio1.00
Culet sizeNone
Top View
6.83 mm6.85 mm1.21 ctK / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6552463506
Side View
Table 59.0%Crown 33.5°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 61.5%

Caratlytics Score

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

Price History

Last verified: Nov 5
Current: £1,508 GBP|Low: £1,030 GBP|High: £2,026 GBP|Avg: £1,438 GBP|-5.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Wholesale Diamonds Direct
November 6, 2026
Retailer 5£1,035 GBP
Retailer 8£1,202 GBP
Retailer 9£1,202 GBP
Retailer 3£1,227 GBP
Retailer 2£1,308 GBP
Retailer 4£1,325 GBP
Retailer 10£1,446 GBP
Retailer 1£1,508 GBP
Retailer 7£1,547 GBP
Retailer 11£1,588 GBP
Retailer 6£1,680 GBP
Wholesale Diamonds Direct£1,968 GBP

34 data points across 12 retailers

13 retailers£1,035 GBP to £1,968 GBP

A
Cheapest Retailer
-
£1,035 GBP
A
Retailer 2
-
£1,202 GBP
View
A
Retailer 3
-
£1,202 GBP
View
A
Retailer 4
-
£1,227 GBP
View
A
Retailer 5
-
£1,308 GBP
View
A
Retailer 6
-
£1,325 GBP
View
A
Retailer 7
-
£1,446 GBP
View
B+
Retailer 8
-
£1,495 GBP
View
A
Retailer 9
-
£1,508 GBP
View
A
Retailer 10
-
£1,547 GBP
View
B+
Retailer 11
-
£1,588 GBP
View
B+
Retailer 12
-
£1,680 GBP
View
Most Expensive
B+
Wholesale Diamonds Direct
570927855 · Nov 4
£1,968 GBP
$2,649 USD
View
12 more retailers have this diamond
Prices start from £1,035 GBPSave up to £933 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 Round
£1,035 GBP