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Round|Natural|GIA

3.90ct I SI1 Round Natural Diamond

EX • I/SI1 • GIA 1565777341

Certificate GIA 1565777341

Diamond specifications and retailer prices

From £28,337 GBP
₹3,616,055 INR
As of October 31, 2026
Save £24,421 GBP (46%) vs most expensive(unlock to see where)
18 retailers carry this diamond
Most expensive: £52,758 GBP at MOH London · As of November 1, 2026
View at MOH London

About this 3.9ct natural round diamond

This 3.9ct natural round sits in the three to five carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1565777341. Listed at 18 retailers as of October 31, 2026, with prices from £28,337 to £52,758, a £24,421 spread on the same certified stone. MOH London lists it at £52,758. 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

3.90
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
Crown angle36°
Pavilion angle40.8°
OriginNatural
Grading LabGIA
CertificateGIA 1565777341
Dimensions9.97 × 10.01 × 6.25 mm
L/W Ratio1.00
Culet sizeNone
Key to symbols
Crystal, Cloud, Needle, Natural
Top View
9.97 mm10.01 mm3.90 ctI / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceStrong
CertificateGIA 1565777341
Side View
Table 58.0%Crown 36°Girdle: MED-STKPavilion 40.8°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: £52,758 GBP|Low: £28,337 GBP|High: £53,040 GBP|Avg: £37,688 GBP|-0.5%
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
Retailer 14
Retailer 15
Retailer 16
Retailer 17
November 1, 2026
Retailer 16£28,337 GBP
Retailer 2£28,554 GBP
Retailer 10£30,614 GBP
Retailer 15£30,965 GBP
Retailer 5£33,300 GBP
Retailer 13£33,793 GBP
Retailer 6£35,189 GBP
Retailer 17£36,115 GBP
Retailer 14£36,596 GBP
Retailer 8£37,288 GBP
Retailer 3£38,537 GBP
Retailer 9£38,841 GBP
Retailer 11£41,013 GBP
Retailer 4£41,949 GBP
Retailer 12£43,792 GBP
Retailer 7£51,363 GBP
MOH London£52,758 GBP

4 data points across 17 retailers

18 retailers£28,337 GBP to £52,758 GBP

A
Cheapest Retailer
-
£28,337 GBP
₹3,616,055 INR
B+
Retailer 2
-
£28,554 GBP
HK$298,900 HKD
View
B+
Retailer 3
-
£30,614 GBP
$41,020 USD
View
B+
Retailer 4
-
£30,965 GBP
$41,490 USD
View
Final sale: no returns
B+
Retailer 5
-
£31,189 GBP
A$64,292 AUD
View
B+
Retailer 6
-
£33,300 GBP
$44,619 USD
View
B+
Retailer 7
-
£33,793 GBP
View
B
Retailer 8
-
£35,189 GBP
$47,149 USD
View
B
Retailer 9
-
£36,115 GBP
$48,390 USD
View
B
Retailer 10
-
£36,596 GBP
$49,035 USD
View
B
Retailer 11
-
£37,288 GBP
$49,962 USD
View
B
Retailer 12
-
£38,537 GBP
€49,177 EUR
View
B
Retailer 13
-
£38,841 GBP
$52,043 USD
View
B
Retailer 14
-
£41,013 GBP
View
B
Retailer 15
-
£41,949 GBP
$56,207 USD
View
B
Retailer 16
-
£43,792 GBP
ZAR 947,933 ZAR
View
B
Retailer 17
-
£51,363 GBP
$68,821 USD
View
Most Expensive
B
MOH London
AE23557C1 · Nov 1
£52,758 GBP
View
17 more retailers have this diamond
Prices start from £28,337 GBPSave up to £24,421 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
3.90ct Round
£28,337 GBP