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Round|Natural|GIA

1.23ct D SI2 Round Natural Diamond

EX • D/SI2 • GIA 7541629448

Certificate GIA 7541629448

Diamond specifications and retailer prices

From £1,729 GBP
HK$18,100 HKD
As of October 31, 2026
Save £2,105 GBP (55%) vs most expensive(unlock to see where)
16 retailers carry this diamond
Most expensive: £3,834 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.23ct natural round diamond

This 1.23ct natural round sits in the classic one-carat band, graded D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by GIA 7541629448. Listed at 16 retailers as of October 29, 2026, with prices from £1,729 to £3,834, a £2,105 spread on the same certified stone. MOH London lists it at £3,834. 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

1.23
Carat
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
Crown angle36°
Pavilion angle40.6°
OriginNatural
Grading LabGIA
CertificateGIA 7541629448
Dimensions6.78 × 6.81 × 4.25 mm
L/W Ratio1.00
Girdle conditionFaceted
Top View
6.78 mm6.81 mm1.23 ctD / SI2
OriginNatural
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceMedium
CertificateGIA 7541629448
Side View
Table 57.0%Crown 36°Girdle: MED-STKPavilion 40.6°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: £3,834 GBP|Low: £1,710 GBP|High: £4,224 GBP|Avg: £2,412 GBP|-9.2%
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
October 31, 2026
Retailer 2£1,729 GBP
Retailer 10£1,846 GBP
Retailer 4£1,849 GBP
Retailer 5£1,883 GBP
Retailer 12£1,907 GBP
Retailer 6£1,913 GBP
Retailer 7£2,066 GBP
Retailer 15£2,140 GBP
Retailer 3£2,254 GBP
Retailer 16£2,254 GBP
Retailer 13£2,329 GBP
Retailer 11£2,368 GBP
Retailer 9£2,512 GBP
Retailer 14£2,704 GBP
Retailer 8£2,705 GBP
MOH London£3,834 GBP

29 data points across 16 retailers

16 retailers£1,729 GBP to £3,834 GBP

A
Cheapest Retailer
-
£1,729 GBP
HK$18,100 HKD
A
Retailer 2
-
£1,846 GBP
$2,474 USD
View
A
Retailer 3
-
£1,849 GBP
$2,478 USD
View
A
Retailer 4
-
£1,883 GBP
$2,523 USD
View
A
Retailer 5
-
£1,907 GBP
$2,555 USD
View
Final sale: no returns
A
Retailer 6
-
£1,913 GBP
A$3,944 AUD
View
A
Retailer 7
-
£2,066 GBP
$2,768 USD
View
A
Retailer 8
-
£2,140 GBP
$2,868 USD
View
A
Retailer 9
-
£2,254 GBP
$3,020 USD
View
A
Retailer 10
-
£2,254 GBP
$3,020 USD
View
A
Retailer 11
-
£2,329 GBP
$3,120 USD
View
A
Retailer 12
-
£2,368 GBP
View
A
Retailer 13
-
£2,512 GBP
€3,205 EUR
View
A
Retailer 14
-
£2,704 GBP
$3,623 USD
View
Retailer 15
-
£2,705 GBP
$3,625 USD
View
Price last confirmed 8 days ago
Most Expensive
B+
MOH London
86167BD04 · Oct 29
£3,834 GBP
View
15 more retailers have this diamond
Prices start from £1,729 GBPSave up to £2,105 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
1.23ct Round
£1,729 GBP