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Round|Lab Grown|IGI

1.91ct I SI1 Round Lab Grown Diamond

EX • I/SI1 • IGI LG485136751

Shape and cutting style on the report: Round brilliant

Certificate IGI LG485136751

Diamond specifications and retailer prices

From €958 EUR
$1,070 USD
As of October 31, 2026
Save €4,172 EUR (81%) vs most expensive(unlock to see where)
12 retailers carry this diamond
Most expensive: €5,130 EUR at MOH London · As of November 1, 2026
View at MOH London

About this 1.91ct lab-grown round diamond

This 1.91ct lab-grown round sits in the one-and-a-half to two carat band, graded I colour (near-colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG485136751 or 485136751. Listed at 12 retailers as of October 31, 2026, with prices from €958 to €5,130, a €4,172 spread on the same certified stone. MOH London lists it at €5,130. 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

1.91
Carat
I
Colour
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle36.2°
Pavilion angle40.1°
OriginLab Grown
Grading LabIGI
CertificateIGI LG485136751
Dimensions7.92 × 7.85 × 4.84 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process and may include post-growth treatment Type IIa
Top View
7.92 mm7.85 mm1.91 ctI / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG485136751
Side View
Table 60.0%Crown 36.2°Girdle: MED-STKPavilion 40.1°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 31
Current: €5,130 EUR|Low: €958 EUR|High: €5,198 EUR|Avg: €2,402 EUR
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
November 2, 2026
Retailer 7€958 EUR
Retailer 9€1,549 EUR
Retailer 13€1,685 EUR
Retailer 12€1,735 EUR
Retailer 3€1,796 EUR
Retailer 10€1,796 EUR
Retailer 6€1,825 EUR
Retailer 4€1,947 EUR
Retailer 5€2,406 EUR
Retailer 11€2,820 EUR
Retailer 8€3,097 EUR
Retailer 2€3,249 EUR
Retailer 14€3,367 EUR
MOH London€5,130 EUR

38 data points across 14 retailers

12 retailers€958 EUR to €5,130 EUR

A
Cheapest Retailer
-
€958 EUR
$1,070 USD
B+
Retailer 2
-
€1,549 EUR
$1,730 USD
View
B+
Retailer 3
-
€1,685 EUR
$1,882 USD
View
B+
Retailer 4
-
€1,735 EUR
$1,938 USD
View
Final sale: no returns
B+
Retailer 5
-
€1,796 EUR
$2,007 USD
View
Retailer 6
-
€1,796 EUR
$2,007 USD
View
Price last confirmed 20 days ago
B+
Retailer 7
-
€1,947 EUR
$2,175 USD
View
B
Retailer 8
-
€2,820 EUR
$3,151 USD
View
B
Retailer 9
-
€3,097 EUR
$3,460 USD
View
B
Retailer 10
-
€3,249 EUR
£2,858 GBP
View
B
Retailer 11
-
€3,367 EUR
$3,762 USD
View
Most Expensive
B
MOH London
LG485136751 · Nov 1
€5,130 EUR
£4,513 GBP
View
11 more retailers have this diamond
Prices start from €958 EURSave up to €4,172 EUR

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
1.91ct Round
€958 EUR