Round|Natural|GIA

1.01ct K SI1 Round Natural Diamond

EX • K/SI1 • GIA 6521315816

Certificate GIA 6521315816

Diamond specifications and retailer prices

From £932 GBP
As of November 5, 2026
Save £1,373 GBP (60%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £2,993 GBP at NZ Jewellers · As of October 23, 2026
View at NZ Jewellers

About this 1.01ct natural round diamond

This 1.01ct natural round sits in the classic one-carat band, graded K colour (faint-tinted) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6521315816. Listed at 16 retailers as of November 4, 2026, with a 147% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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

1.01
Carat
K
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle35°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 6521315816
Dimensions6.39 × 6.36 × 3.98 mm
L/W Ratio1.00
Top View
6.39 mm6.36 mm1.01 ctK / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6521315816
Side View
Table 59.0%Crown 35°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.6%

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 5
Current: £2,993 GBP|Low: £894 GBP|High: £2,993 GBP|Avg: £1,462 GBP
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 12£932 GBP
Retailer 8£1,010 GBP
Retailer 2£1,212 GBP
Retailer 3£1,216 GBP
Retailer 16£1,218 GBP
Retailer 11£1,253 GBP
Retailer 9£1,296 GBP
Retailer 13£1,310 GBP
Retailer 5£1,363 GBP
Retailer 10£1,366 GBP
Retailer 6£1,382 GBP
Retailer 14£1,610 GBP
Retailer 7£1,642 GBP
Retailer 4£1,984 GBP
Retailer 15£2,305 GBP
NZ Jewellers£2,993 GBP

31 data points across 16 retailers

16 retailers£932 GBP to £2,305 GBP

A
Cheapest Retailer
-
£932 GBP
Retailer 2
-
£1,010 GBP
View
Price last confirmed 30 days ago
A
Retailer 3
-
£1,212 GBP
View
A
Retailer 4
-
£1,216 GBP
View
A
Retailer 5
-
£1,218 GBP
View
Final sale: no returns
B+
Retailer 6
-
£1,253 GBP
View
B+
Retailer 7
-
£1,296 GBP
View
A
Retailer 8
-
£1,310 GBP
View
B+
Retailer 9
-
£1,363 GBP
View
B+
Retailer 10
-
£1,366 GBP
View
B+
Retailer 11
-
£1,370 GBP
View
B+
Retailer 12
-
£1,382 GBP
View
B+
Retailer 13
-
£1,610 GBP
View
B
Retailer 14
-
£1,984 GBP
View
B
Retailer 15
-
£2,305 GBP
View
Most Expensive
NZ Jewellers
4a6abdf3-a49c-481c-aab1-61bd85586a3c · Oct 23
£2,993 GBP
$4,028 USD
View
Price last confirmed 13 days ago
15 more retailers have this diamond
Prices start from £932 GBPSave up to £1,373 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
1.01ct Round
£932 GBP