CaratHunter
Plans
Round|Lab Grown|IGI

1.27ct E SI1 Round Lab Grown Diamond

EX • E/SI1 • IGI LG656402458

Shape and cutting style on the report: Round brilliant

Certificate IGI LG656402458

Diamond specifications and retailer prices

From €134 EUR
$150 USD
As of October 29, 2026
Save €647 EUR (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: €781 EUR at MOH London · As of October 25, 2026
View at MOH London

About this 1.27ct lab-grown round diamond

This 1.27ct lab-grown round sits in the one-and-a-quarter to one-and-a-half carat band, graded E colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG656402458 or 656402458. Listed at 20 retailers as of October 25, 2026, with prices from €134 to €781, a €647 spread on the same certified stone. MOH London lists it at €781. 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

1.27
Carat
E
Color
SI1
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle32.9°
Pavilion angle40.4°
OriginLab Grown
Grading LabIGI
CertificateIGI LG656402458
Dimensions7.08 × 7.01 × 4.16 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
7.08 mm7.01 mm1.27 ctE / SI1
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG656402458
Side View
Table 61.0%Crown 32.9°Girdle: MED-STKPavilion 40.4°Culet: NoneDepth 59.0%

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: €781 EUR|Low: €134 EUR|High: €789 EUR|Avg: €393 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
November 1, 2026
Retailer 11€134 EUR
Retailer 13€166 EUR
Retailer 2€289 EUR
Retailer 3€306 EUR
Retailer 7€320 EUR
Retailer 6€326 EUR
Retailer 4€355 EUR
Retailer 5€394 EUR
Retailer 8€412 EUR
Retailer 9€412 EUR
Retailer 12€528 EUR
Retailer 10€566 EUR
MOH London€781 EUR

43 data points across 13 retailers

20 retailers€134 EUR to €781 EUR

Retailer 1
-
€134 EUR
$150 USD
Price last confirmed 39 days ago
A
Retailer 2
-
€134 EUR
$150 USD
View
Retailer 3
-
€156 EUR
$174 USD
View
Price last confirmed 39 days ago
Retailer 4
-
€165 EUR
$184 USD
View
Price last confirmed 39 days ago
A
Retailer 5
-
€166 EUR
$186 USD
View
A
Retailer 6
-
€166 EUR
$186 USD
View
A
Retailer 7
-
€289 EUR
£254 GBP
View
B+
Retailer 8
-
€306 EUR
$342 USD
View
A
Retailer 9
-
€320 EUR
View
A
Retailer 10
-
€326 EUR
£286 GBP
View
A
Retailer 11
-
€355 EUR
$397 USD
View
B+
Retailer 12
-
€394 EUR
$440 USD
View
B+
Retailer 13
-
€412 EUR
$460 USD
View
B+
Retailer 14
-
€412 EUR
A$708 AUD
View
Retailer 15
-
€425 EUR
$475 USD
View
Price last confirmed 41 days ago
B+
Retailer 16
-
€528 EUR
$590 USD
View
B
Retailer 17
-
€536 EUR
$599 USD
View
Retailer 18
-
€536 EUR
$599 USD
View
Price last confirmed 40 days ago
B
Retailer 19
-
€566 EUR
$632 USD
View
Most Expensive
B
MOH London
LG656402458 · Oct 25
€781 EUR
£687 GBP
View
19 more retailers have this diamond
Prices start from €134 EURSave up to €647 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
1.27ct Round
€134 EUR