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Round|Lab Grown|IGI

1.00ct D SI2 Round Lab Grown Diamond

EX • D/SI2 • IGI LG816641818

Shape and cutting style on the report: Round brilliant

Certificate IGI LG816641818

Diamond specifications and retailer prices

From $364 AUD
£201 GBP
As of October 30, 2026
Save $1,476 AUD (80%) vs most expensive(unlock to see where)
14 retailers carry this diamond
Most expensive: $1,840 AUD 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 D colour (colourless) and SI2 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG816641818 or 816641818. Listed at 14 retailers as of October 26, 2026, with prices from $364 to $1,840, a $1,476 spread on the same certified stone. MOH London lists it at $1,840. 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
D
Colour
SI2
Clarity
Excellent
Cut

Specifications

CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
Crown angle34.1°
Pavilion angle40.2°
OriginLab Grown
Grading LabIGI
CertificateIGI LG816641818
Dimensions6.45 × 6.42 × 3.86 mm
L/W Ratio1.00
Girdle conditionFaceted
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
6.45 mm6.42 mm1.00 ctD / SI2
OriginLab Grown
CutExcellent
PolishExcellent
SymmetryVery Good
FluorescenceNone
CertificateIGI LG816641818
Side View
Table 62.0%Crown 34.1°Girdle: MED-STKPavilion 40.2°Culet: NoneDepth 59.9%

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 30
Current: $1,840 AUD|Low: $115 AUD|High: $1,860 AUD|Avg: $563 AUD|+0.2%
MOH London
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
October 30, 2026
Retailer 9$115 AUD
Retailer 8$235 AUD
Retailer 2$364 AUD
Retailer 3$418 AUD
Retailer 5$423 AUD
Retailer 7$464 AUD
Retailer 6$679 AUD
Retailer 4$747 AUD
MOH London$1,840 AUD

42 data points across 9 retailers

14 retailers$364 AUD to $1,840 AUD

Retailer 1
-
$171 AUD
$120 USD
Price last confirmed 22 days ago
Retailer 2
-
$178 AUD
$125 USD
View
Price last confirmed 31 days ago
Retailer 3
-
$206 AUD
$145 USD
View
Price last confirmed 24 days ago
Retailer 4
-
$206 AUD
$145 USD
View
Price last confirmed 42 days ago
Retailer 5
-
$233 AUD
$164 USD
View
Price last confirmed 31 days ago
Retailer 6
-
$235 AUD
$165 USD
View
Price last confirmed 22 days ago
A
Retailer 7
-
$364 AUD
£201 GBP
View
B+
Retailer 8
-
$418 AUD
€280 EUR
View
B+
Retailer 9
-
$423 AUD
$297 USD
View
B+
Retailer 10
-
$464 AUD
$326 USD
View
B+
Retailer 11
-
$679 AUD
$477 USD
View
Retailer 12
-
$707 AUD
$497 USD
View
Price last confirmed 29 days ago
B
Retailer 13
-
$747 AUD
$525 USD
View
Most Expensive
B
MOH London
LG816641818 · Oct 26
$1,840 AUD
£1,018 GBP
View
13 more retailers have this diamond
Prices start from $364 AUDSave up to $1,476 AUD

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
$364 AUD