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Round|Lab Grown|IGI

1.28ct D FL Round Lab Grown Diamond

ID • D/FL • IGI LG823694958

Shape and cutting style on the report: Round brilliant

Certificate IGI LG823694958

Diamond specifications and retailer prices

From £500 GBP
$666 USD
As of October 29, 2026
Save £1,956 GBP (80%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: £2,456 GBP at MOH London · As of October 29, 2026
View at MOH London

About this 1.28ct lab-grown round diamond

This 1.28ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded D colour (colourless) and FL clarity (flawless or internally-flawless), with a top-tier cut grade and certified by IGI LG823694958 or 823694958. Listed at 20 retailers as of October 29, 2026, with prices from £500 to £2,456, a £1,956 spread on the same certified stone. MOH London lists it at £2,456. Compare the cross-retailer prices above before buying. The same certified stone often varies 15 to 40% across stores.

The 4Cs

1.28
Carat
D
Colour
FL
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34.3°
Pavilion angle40.7°
OriginLab Grown
Grading LabIGI
CertificateIGI LG823694958
Dimensions6.95 × 6.98 × 4.25 mm
L/W Ratio1.00
Girdle conditionFaceted
Cert comments
HEARTS & ARROWS As Grown - No indication of post-growth treatment This Laboratory Grown Diamond was created by High Pressure High Temperature (HPHT) growth process Type II
Top View
6.95 mm6.98 mm1.28 ctD / FL
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG823694958
Side View
Table 58.0%Crown 34.3°Girdle: MediumPavilion 40.7°Culet: NoneDepth 61.0%

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 29
Current: £2,456 GBP|Low: £480 GBP|High: £2,860 GBP|Avg: £1,219 GBP|-13.1%
MOH London
Retailer 2
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Retailer 20
October 30, 2026
Retailer 19£500 GBP
Retailer 3£544 GBP
Retailer 7£559 GBP
Retailer 6£580 GBP
Retailer 8£580 GBP
Retailer 20£673 GBP
Retailer 4£695 GBP
Retailer 15£713 GBP
Retailer 2£924 GBP
Retailer 13£943 GBP
Retailer 5£944 GBP
Retailer 14£1,066 GBP
Retailer 16£1,213 GBP
Retailer 17£1,481 GBP
Retailer 10£1,630 GBP
Retailer 11£1,952 GBP
Retailer 12£2,000 GBP
Retailer 9£2,012 GBP
Retailer 18£2,163 GBP
MOH London£2,456 GBP

38 data points across 20 retailers

20 retailers£500 GBP to £2,456 GBP

A
Cheapest Retailer
-
£500 GBP
$666 USD
A
Retailer 2
-
£544 GBP
$724 USD
View
A
Retailer 3
-
£559 GBP
$745 USD
View
Final sale: no returns
A
Retailer 4
-
£580 GBP
$772 USD
View
Retailer 5
-
£580 GBP
$772 USD
View
Price last confirmed 13 days ago
B+
Retailer 6
-
£673 GBP
HK$7,000 HKD
View
B+
Retailer 7
-
£695 GBP
$925 USD
View
B+
Retailer 8
-
£713 GBP
$950 USD
View
B+
Retailer 9
-
£924 GBP
View
B+
Retailer 10
-
£943 GBP
€1,196 EUR
View
B+
Retailer 11
-
£944 GBP
$1,257 USD
View
B+
Retailer 12
-
£1,066 GBP
ZAR 22,926 ZAR
View
Retailer 13
-
£1,213 GBP
$1,615 USD
View
Price last confirmed 8 days ago
B
Retailer 14
-
£1,481 GBP
$1,972 USD
View
B
Retailer 15
-
£1,630 GBP
$2,171 USD
View
B
Retailer 16
-
£1,952 GBP
SGD 3,513 SGD
View
B
Retailer 17
-
£2,000 GBP
$2,663 USD
View
B
Retailer 18
-
£2,012 GBP
$2,679 USD
View
B
Retailer 19
-
£2,163 GBP
$2,880 USD
View
Most Expensive
B
MOH London
LG823694958 · Oct 29
£2,456 GBP
View
19 more retailers have this diamond
Prices start from £500 GBPSave up to £1,956 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
1.28ct Round
£500 GBP