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Round|Natural|GIA

1.07ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 6555159203

Certificate GIA 6555159203

Diamond specifications and retailer prices

From £1,883 GBP
$2,523 USD
As of October 31, 2026
Save £997 GBP (35%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £4,274 GBP at NZ Jewellers · As of September 1, 2026
View at NZ Jewellers

About this 1.07ct natural round diamond

This 1.07ct natural round sits in the classic one-carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 6555159203. Listed at 13 retailers as of October 31, 2026, with a 53% 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

1.07
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33°
Pavilion angle41.6°
OriginNatural
Grading LabGIA
CertificateGIA 6555159203
Dimensions6.52 × 6.56 × 4.10 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Top View
6.52 mm6.56 mm1.07 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 6555159203
Side View
Table 56.0%Crown 33°Girdle: MED-STKPavilion 41.6°Culet: NoneDepth 62.7%

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: Oct 31
Current: £2,852 GBP|Low: £1,771 GBP|High: £2,920 GBP|Avg: £2,444 GBP|+1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
October 31, 2026
Retailer 4£1,917 GBP
Retailer 3£1,948 GBP
Retailer 5£2,223 GBP
Retailer 6£2,223 GBP
Retailer 2£2,710 GBP
Retailer 7£2,846 GBP
Retailer 1£2,852 GBP
Retailer 8£2,920 GBP

37 data points across 8 retailers

13 retailers£1,883 GBP to £2,880 GBP

A
Cheapest Retailer
-
£1,883 GBP
$2,523 USD
A
Retailer 2
-
£1,917 GBP
$2,569 USD
View
A
Retailer 3
-
£1,934 GBP
$2,591 USD
View
B+
Retailer 4
-
£1,948 GBP
$2,610 USD
View
Final sale: no returns
B+
Retailer 5
-
£2,053 GBP
A$4,232 AUD
View
B+
Retailer 6
-
£2,270 GBP
CA$4,225 CAD
View
B+
Retailer 7
-
£2,414 GBP
$3,234 USD
View
B+
Retailer 8
-
£2,414 GBP
$3,234 USD
View
Retailer 9
-
£2,564 GBP
$3,436 USD
View
Price last confirmed 55 days ago
B+
Retailer 10
-
£2,710 GBP
€3,458 EUR
View
B+
Retailer 11
-
£2,852 GBP
View
B
Retailer 12
-
£2,880 GBP
$3,859 USD
View
Most Expensive
NZ Jewellers
0692d3a2-a0e8-48ac-a332-aeaddfa4bec0 · Sep 1
£4,274 GBP
$5,727 USD
View
Price last confirmed 61 days ago
12 more retailers have this diamond
Prices start from £1,883 GBPSave up to £997 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
1.07ct Round
£1,883 GBP