Marquise|Lab Grown|IGI

0.85ct D SI1 Marquise Lab Grown Diamond

ID • D/SI1 • IGI LG844633176

Shape and cutting style on the report: Marquise brilliant

Certificate IGI LG844633176

Diamond specifications and retailer prices

From £117 GBP
$157 USD
As of October 25, 2026
Save £413 GBP (78%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £981 GBP at MOH London · As of October 25, 2026
View at MOH London

About this 0.85ct lab-grown marquise diamond

This 0.85ct lab-grown marquise sits in the just-under-one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG844633176 or 844633176. Listed at 17 retailers as of October 25, 2026, with a 352% 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

0.85
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.3°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG844633176
Dimensions10.30 × 4.93 × 3.02 mm
L/W Ratio2.09
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
10.30 mm4.93 mm0.85 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG844633176
Side View
Table 59.0%Crown 33.3°Girdle: THN-MEDPavilion 40.9°Culet: NoneDepth 61.3%

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 25
Current: £981 GBP|Low: £95 GBP|High: £1,015 GBP|Avg: £265 GBP|-3.4%
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
October 26, 2026
Retailer 5£95 GBP
Retailer 16£106 GBP
Retailer 9£110 GBP
Retailer 3£117 GBP
Retailer 13£117 GBP
Retailer 15£158 GBP
Retailer 14£160 GBP
Retailer 10£170 GBP
Retailer 7£184 GBP
Retailer 2£189 GBP
Retailer 12£205 GBP
Retailer 11£273 GBP
Retailer 8£325 GBP
Retailer 6£353 GBP
Retailer 17£378 GBP
Retailer 4£399 GBP
MOH London£981 GBP

9 data points across 17 retailers

17 retailers£117 GBP to £530 GBP

Retailer 1
-
£95 GBP
$127 USD
Price last confirmed 9 days ago
Retailer 2
-
£110 GBP
$147 USD
View
Price last confirmed 7 days ago
Retailer 3
-
£117 GBP
$157 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
£117 GBP
$157 USD
View
Retailer 5
-
£158 GBP
$212 USD
View
Price last confirmed 7 days ago
Retailer 6
-
£160 GBP
$215 USD
View
Price last confirmed 7 days ago
A
Retailer 7
-
£170 GBP
View
A
Retailer 8
-
£184 GBP
$246 USD
View
A
Retailer 9
-
£189 GBP
View
Retailer 10
-
£205 GBP
€262 EUR
View
Price last confirmed 7 days ago
B+
Retailer 11
-
£273 GBP
View
Retailer 12
-
£325 GBP
SGD 589 SGD
View
Price last confirmed 7 days ago
Retailer 13
-
£353 GBP
$473 USD
View
Price last confirmed 7 days ago
Retailer 14
-
£378 GBP
$506 USD
View
Price last confirmed 7 days ago
B+
Retailer 15
-
£399 GBP
$534 USD
View
B
Retailer 16
-
£530 GBP
$710 USD
View
Most Expensive
MOH London
LG844633176 · Oct 25
£981 GBP
View
Price last confirmed 7 days ago
16 more retailers have this diamond
Prices start from £117 GBPSave up to £413 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
0.85ct Marquise
£117 GBP