CaratHunter
Plans
Round|Lab Grown|IGI

1.00ct E SI2 Round Lab Grown Diamond

ID • E/SI2 • IGI LG781611998

Shape and cutting style on the report: Round brilliant

Certificate IGI LG781611998

Diamond specifications and retailer prices

From $165 USD
As of October 29, 2026
Save $794 USD (83%) vs most expensive(unlock to see where)
20 retailers carry this diamond
Most expensive: $959 USD at MOH London · As of October 26, 2026
View at MOH London

About this 1ct lab-grown round diamond

This 1ct lab-grown round sits in the classic one-carat band, graded E colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG781611998 or 781611998. Listed at 20 retailers as of October 26, 2026, with prices from $165 to $959, a $794 spread on the same certified stone. MOH London lists it at $959. 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

1.00
Carat
E
Color
SI2
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle34°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG781611998
Dimensions6.48 × 6.43 × 3.90 mm
L/W Ratio1.01
Girdle conditionFaceted
Culet sizePointed
Cert comments
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
6.48 mm6.43 mm1.00 ctE / SI2
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG781611998
Side View
Table 59.0%Crown 34°Girdle: MED-STKPavilion 40.6°Culet: NoneDepth 60.4%

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: $959 USD|Low: $157 USD|High: $964 USD|Avg: $412 USD|+0.8%
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
October 29, 2026
Retailer 5$165 USD
Retailer 4$185 USD
Retailer 10$192 USD
Retailer 13$205 USD
Retailer 15$205 USD
Retailer 2$361 USD
Retailer 9$363 USD
Retailer 14$368 USD
Retailer 12$446 USD
Retailer 8$476 USD
Retailer 11$480 USD
Retailer 3$532 USD
Retailer 7$550 USD
Retailer 6$659 USD
MOH London$959 USD

39 data points across 15 retailers

20 retailers$165 USD to $959 USD

A
Retailer 1
-
$164 USD
Price last confirmed 38 days ago
A
Retailer 2
-
$165 USD
View
A
Retailer 3
-
$185 USD
View
Final sale: no returns
A
Retailer 4
-
$190 USD
View
Price last confirmed 37 days ago
A
Retailer 5
-
$192 USD
View
A
Retailer 6
-
$201 USD
View
Price last confirmed 38 days ago
A
Retailer 7
-
$205 USD
View
A
Retailer 8
-
$205 USD
View
B+
Retailer 9
-
$335 USD
View
B+
Retailer 10
-
$361 USD
£284 GBP
View
B+
Retailer 11
-
$363 USD
€346 EUR
View
B+
Retailer 12
-
$368 USD
View
B
Retailer 13
-
$446 USD
View
B+
Retailer 14
-
$476 USD
£375 GBP
View
B+
Retailer 15
-
$480 USD
A$738 AUD
View
B
Retailer 16
-
$532 USD
View
B
Retailer 17
-
$550 USD
View
B
Retailer 18
-
$653 USD
View
Price last confirmed 38 days ago
B
Retailer 19
-
$659 USD
View
Most Expensive
B
MOH London
LG781611998 · Oct 26
$959 USD
£755 GBP
View
19 more retailers have this diamond
Prices start from $165 USDSave up to $794 USD

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
1.00ct Round
$165 USD