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Round|Natural|GIA

1.03ct F SI1 Round Natural Diamond

EX • F/SI1 • GIA 1565178690

Certificate GIA 1565178690

Diamond specifications and retailer prices

From £1,634 GBP
₹208,508 INR
As of October 28, 2026
Save £3,321 GBP (67%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: £7,228 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.03ct natural round diamond

This 1.03ct natural round sits in the classic one-carat band, graded F colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by GIA 1565178690. Listed at 12 retailers as of October 28, 2026, with a 203% 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

1.03
Carat
F
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
OriginNatural
Grading LabGIA
CertificateGIA 1565178690
Dimensions6.39 × 6.43 × 4.01 mm
L/W Ratio1.01
Culet sizeNone
Top View
6.39 mm6.43 mm1.03 ctF / SI1
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateGIA 1565178690
Side View
Table 57.0%CrownGirdle: MED-STKPavilionCulet: 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 28
Current: £7,228 GBP|Low: £1,628 GBP|High: £7,228 GBP|Avg: £2,453 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
October 30, 2026
Retailer 10£1,634 GBP
Retailer 4£1,963 GBP
Retailer 3£2,202 GBP
Retailer 11£2,331 GBP
Retailer 5£2,548 GBP
Retailer 2£2,604 GBP
Retailer 12£2,636 GBP
Retailer 6£4,530 GBP
Retailer 7£4,723 GBP
Retailer 9£4,880 GBP
Retailer 8£4,955 GBP
MOH London£7,228 GBP

41 data points across 12 retailers

12 retailers£1,634 GBP to £4,955 GBP

A
Cheapest Retailer
-
£1,634 GBP
₹208,508 INR
Retailer 2
-
£1,963 GBP
$2,630 USD
View
Price last confirmed 15 days ago
B+
Retailer 3
-
£2,202 GBP
$2,950 USD
View
B+
Retailer 4
-
£2,331 GBP
$3,123 USD
View
B+
Retailer 5
-
£2,548 GBP
€3,252 EUR
View
B+
Retailer 6
-
£2,604 GBP
View
B+
Retailer 7
-
£2,636 GBP
ZAR 57,067 ZAR
View
B
Retailer 8
-
£4,530 GBP
$6,070 USD
View
B
Retailer 9
-
£4,723 GBP
View
B
Retailer 10
-
£4,880 GBP
$6,538 USD
View
B
Retailer 11
-
£4,955 GBP
$6,639 USD
View
Most Expensive
MOH London
8689F6FE5 · Oct 29
£7,228 GBP
View
Price under review
11 more retailers have this diamond
Prices start from £1,634 GBPSave up to £3,321 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
1.03ct Round
£1,634 GBP