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Round|Natural|GIA

1.60ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 2556369395

Certificate GIA 2556369395

Diamond specifications and retailer prices

From £3,382 GBP
HK$35,400 HKD
As of November 1, 2026
Save £3,429 GBP (50%) vs most expensive(unlock to see where)
13 retailers carry this diamond
Most expensive: £6,811 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 1.6ct natural round diamond

This 1.6ct natural round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 2556369395. Listed at 13 retailers as of November 1, 2026, with prices from £3,382 to £6,811, a £3,429 spread on the same certified stone. MOH London lists it at £6,811. 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

1.60
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 2556369395
Dimensions7.46 × 7.41 × 4.64 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizeNone
Key to symbols
Crystal, Feather, Cloud, Needle, Indented Natural, Natural
Top View
7.46 mm7.41 mm1.60 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceFaint
CertificateGIA 2556369395
Side View
Table 58.0%Crown 36°Girdle: Slightly ThickPavilion 40.8°Culet: NoneDepth 62.4%

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 1
Current: £6,811 GBP|Low: £3,353 GBP|High: £6,811 GBP|Avg: £4,234 GBP
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
November 1, 2026
Retailer 10£3,382 GBP
Retailer 5£3,761 GBP
Retailer 11£4,032 GBP
Retailer 7£4,258 GBP
Retailer 9£4,265 GBP
Retailer 12£4,268 GBP
Retailer 4£4,344 GBP
Retailer 13£4,738 GBP
Retailer 6£4,755 GBP
Retailer 2£5,030 GBP
Retailer 8£5,680 GBP
Retailer 3£6,568 GBP
MOH London£6,811 GBP

40 data points across 13 retailers

13 retailers£3,382 GBP to £6,811 GBP

A
Cheapest Retailer
-
£3,382 GBP
HK$35,400 HKD
Retailer 2
-
£3,761 GBP
$5,039 USD
View
Price last confirmed 7 days ago
A
Retailer 3
-
£4,032 GBP
$5,403 USD
View
B+
Retailer 4
-
£4,258 GBP
View
B+
Retailer 5
-
£4,265 GBP
SGD 7,723 SGD
View
B+
Retailer 6
-
£4,268 GBP
$5,718 USD
View
Final sale: no returns
A
Retailer 7
-
£4,344 GBP
$5,820 USD
View
B+
Retailer 8
-
£4,738 GBP
$6,349 USD
View
B+
Retailer 9
-
£4,755 GBP
View
B+
Retailer 10
-
£5,030 GBP
€6,419 EUR
View
B
Retailer 11
-
£5,680 GBP
ZAR 122,959 ZAR
View
B
Retailer 12
-
£6,568 GBP
$8,800 USD
View
Most Expensive
B
MOH London
E76F662C0 · Nov 1
£6,811 GBP
View
12 more retailers have this diamond
Prices start from £3,382 GBPSave up to £3,429 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
1.60ct Round
£3,382 GBP