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Round|Lab Grown|IGI

1.09ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG775620770

Shape and cutting style on the report: Round brilliant

Certificate IGI LG775620770

Diamond specifications and retailer prices

From $204 AUD
$143 USD
As of October 26, 2026
Save $981 AUD (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,184 AUD at MOH London · As of October 26, 2026
View at MOH London

About this 1.09ct lab-grown round diamond

This 1.09ct lab-grown round sits in the classic one-carat band, graded D colour (colourless) and SI1 clarity (slightly-included), with a top-tier cut grade and certified by IGI LG775620770 or 775620770. Listed at 17 retailers as of October 26, 2026, with prices from $204 to $1,184, a $981 spread on the same certified stone. MOH London lists it at $1,184. 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

1.09
Carat
D
Colour
SI1
Clarity
Ideal
Cut

Specifications

CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
Crown angle33.7°
Pavilion angle40.9°
OriginLab Grown
Grading LabIGI
CertificateIGI LG775620770
Dimensions6.59 × 6.64 × 4.05 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
6.59 mm6.64 mm1.09 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG775620770
Side View
Table 57.0%Crown 33.7°Girdle: MED-STKPavilion 40.9°Culet: NoneDepth 61.2%

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 26
Current: $1,184 AUD|Low: $204 AUD|High: $1,266 AUD|Avg: $560 AUD|-5.3%
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
Retailer 16
Retailer 17
October 30, 2026
Retailer 4$204 AUD
Retailer 17$228 AUD
Retailer 16$236 AUD
Retailer 3$253 AUD
Retailer 14$292 AUD
Retailer 13$431 AUD
Retailer 12$432 AUD
Retailer 15$457 AUD
Retailer 5$471 AUD
Retailer 8$527 AUD
Retailer 7$606 AUD
Retailer 9$612 AUD
Retailer 2$629 AUD
Retailer 11$690 AUD
Retailer 10$740 AUD
Retailer 6$813 AUD
MOH London$1,184 AUD

40 data points across 17 retailers

17 retailers$204 AUD to $1,184 AUD

A
Cheapest Retailer
-
$204 AUD
$143 USD
A
Retailer 2
-
$236 AUD
$166 USD
View
Retailer 3
-
$253 AUD
$178 USD
View
Price last confirmed 7 days ago
A
Retailer 4
-
$292 AUD
HK$1,600 HKD
View
A
Retailer 5
-
$431 AUD
£238 GBP
View
A
Retailer 6
-
$432 AUD
€289 EUR
View
A
Retailer 7
-
$457 AUD
$321 USD
View
B+
Retailer 8
-
$471 AUD
$331 USD
View
Retailer 9
-
$527 AUD
£292 GBP
View
Price last confirmed 15 days ago
B+
Retailer 10
-
$606 AUD
$426 USD
View
Retailer 11
-
$612 AUD
$430 USD
View
Price last confirmed 24 days ago
B+
Retailer 12
-
$629 AUD
$442 USD
View
B+
Retailer 13
-
$664 AUD
View
B+
Retailer 14
-
$690 AUD
SGD 655 SGD
View
B+
Retailer 15
-
$740 AUD
$520 USD
View
B+
Retailer 16
-
$813 AUD
$571 USD
View
Most Expensive
B
MOH London
LG775620770 · Oct 26
$1,184 AUD
£655 GBP
View
16 more retailers have this diamond
Prices start from $204 AUDSave up to $981 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
1.09ct Round
$204 AUD