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1.11ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2554971059

Certificate GIA 2554971059

Diamond specifications and retailer prices

From £1,438 GBP
SGD 2,603 SGD
As of October 31, 2026
Save £1,362 GBP (49%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £2,800 GBP at Wholesale Diamonds Direct · As of October 27, 2026
View at Wholesale Diamonds Direct

About this 1.11ct natural round diamond

This 1.11ct 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 2554971059. Listed at 12 retailers as of October 27, 2026, with prices from £1,438 to £2,800, a £1,362 spread on the same certified stone. Wholesale Diamonds Direct lists it at £2,800. 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

1.11
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle41.4°
OriginNatural
Grading LabGIA
CertificateGIA 2554971059
Dimensions6.59 × 6.63 × 4.13 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.59 mm6.63 mm1.11 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 2554971059
Side View
Table 56.0%Crown 34°Girdle: MED-STKPavilion 41.4°Culet: NoneDepth 62.5%

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: Oct 31
Current: £1,841 GBP|Low: £1,438 GBP|High: £2,827 GBP|Avg: £2,059 GBP|-1.0%
Retailer 1
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Wholesale Diamonds Direct
November 2, 2026
Retailer 11£1,438 GBP
Retailer 9£1,699 GBP
Retailer 8£1,714 GBP
Retailer 1£1,841 GBP
Retailer 2£1,867 GBP
Retailer 10£2,023 GBP
Retailer 12£2,124 GBP
Retailer 7£2,147 GBP
Retailer 5£2,149 GBP
Retailer 4£2,189 GBP
Retailer 6£2,200 GBP
Retailer 3£2,613 GBP
Wholesale Diamonds Direct£2,800 GBP

32 data points across 13 retailers

12 retailers£1,438 GBP to £2,800 GBP

A
Cheapest Retailer
-
£1,438 GBP
SGD 2,603 SGD
A
Retailer 2
-
£1,699 GBP
$2,277 USD
View
A
Retailer 3
-
£1,714 GBP
$2,297 USD
View
A
Retailer 4
-
£1,841 GBP
View
A
Retailer 5
-
£1,867 GBP
SGD 3,381 SGD
View
B+
Retailer 6
-
£2,023 GBP
$2,710 USD
View
B+
Retailer 7
-
£2,124 GBP
$2,845 USD
View
B+
Retailer 8
-
£2,147 GBP
View
B+
Retailer 9
-
£2,149 GBP
$2,880 USD
View
B+
Retailer 10
-
£2,200 GBP
€2,808 EUR
View
B
Retailer 11
-
£2,613 GBP
$3,501 USD
View
Most Expensive
B
Wholesale Diamonds Direct
617396327 · Oct 27
£2,800 GBP
$3,751 USD
View
11 more retailers have this diamond
Prices start from £1,438 GBPSave up to £1,362 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
1.11ct Round
£1,438 GBP