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Round|Lab Grown|IGI

1.97ct D SI1 Round Lab Grown Diamond

EX • D/SI1 • IGI LG678584407

Shape and cutting style on the report: Round brilliant

Certificate IGI LG678584407

Diamond specifications and retailer prices

From £199 GBP
$266 USD
As of October 29, 2026
Save £834 GBP (81%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: £1,032 GBP at MOH London · As of October 25, 2026
View at MOH London

About this 1.97ct lab-grown round diamond

This 1.97ct lab-grown round sits in the one-and-a-half to two carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG678584407 or 678584407. Listed at 17 retailers as of October 25, 2026, with prices from £199 to £1,032, a £834 spread on the same certified stone. MOH London lists it at £1,032. 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

1.97
Carat
D
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
Crown angle34.6°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG678584407
Dimensions8.15 × 8.06 × 4.82 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
8.15 mm8.06 mm1.97 ctD / SI1
OriginLab Grown
CutExcellent
PolishVery Good
SymmetryVery Good
FluorescenceNone
CertificateIGI LG678584407
Side View
Table 61.0%Crown 34.6°Girdle: MED-STKPavilion 40.1°Culet: NoneDepth 59.4%

Caratlytics Score

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A
Excellent
Excellent quality and great value
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See the detailed 0 to 100 score with Quality, Value, Certification & Market breakdown

Price History

Last verified: Oct 29
Current: £1,032 GBP|Low: £199 GBP|High: £1,043 GBP|Avg: £539 GBP|-0.9%
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
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Retailer 16
October 31, 2026
Retailer 12£199 GBP
Retailer 6£222 GBP
Retailer 5£231 GBP
Retailer 4£246 GBP
Retailer 14£332 GBP
Retailer 15£366 GBP
Retailer 11£385 GBP
Retailer 13£456 GBP
Retailer 2£458 GBP
Retailer 9£471 GBP
Retailer 16£531 GBP
Retailer 10£625 GBP
Retailer 3£792 GBP
Retailer 7£855 GBP
Retailer 8£1,008 GBP
MOH London£1,032 GBP

35 data points across 16 retailers

17 retailers£199 GBP to £1,032 GBP

A
Cheapest Retailer
-
£199 GBP
$266 USD
A
Retailer 2
-
£222 GBP
$298 USD
View
Final sale: no returns
A
Retailer 3
-
£231 GBP
$309 USD
View
A
Retailer 4
-
£246 GBP
$330 USD
View
A
Retailer 5
-
£257 GBP
$345 USD
View
B+
Retailer 6
-
£332 GBP
$445 USD
View
A
Retailer 7
-
£366 GBP
$490 USD
View
A
Retailer 8
-
£385 GBP
View
B+
Retailer 9
-
£456 GBP
$611 USD
View
B+
Retailer 10
-
£458 GBP
€585 EUR
View
B+
Retailer 11
-
£471 GBP
View
B+
Retailer 12
-
£531 GBP
$712 USD
View
B+
Retailer 13
-
£625 GBP
$837 USD
View
B
Retailer 14
-
£792 GBP
$1,061 USD
View
B
Retailer 15
-
£855 GBP
$1,145 USD
View
B
Retailer 16
-
£1,008 GBP
$1,350 USD
View
Most Expensive
B
MOH London
LG678584407 · Oct 25
£1,032 GBP
View
16 more retailers have this diamond
Prices start from £199 GBPSave up to £834 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
1.97ct Round
£199 GBP