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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 $254 NZD
$143 USD
As of October 26, 2026
Save $1,222 NZD (83%) vs most expensive(unlock to see where)
17 retailers carry this diamond
Most expensive: $1,476 NZD 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 $254 to $1,476, a $1,222 spread on the same certified stone. MOH London lists it at $1,476. 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

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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: $1,476 NZD|Low: $254 NZD|High: $1,577 NZD|Avg: $697 NZD|-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 31, 2026
Retailer 4$254 NZD
Retailer 17$284 NZD
Retailer 16$295 NZD
Retailer 3$316 NZD
Retailer 14$363 NZD
Retailer 2$537 NZD
Retailer 13$537 NZD
Retailer 15$570 NZD
Retailer 5$587 NZD
Retailer 8$657 NZD
Retailer 7$756 NZD
Retailer 9$763 NZD
Retailer 10$784 NZD
Retailer 12$860 NZD
Retailer 11$923 NZD
Retailer 6$1,013 NZD
MOH London$1,476 NZD

40 data points across 17 retailers

17 retailers$254 NZD to $1,476 NZD

A
Cheapest Retailer
-
$254 NZD
$143 USD
A
Retailer 2
-
$295 NZD
$166 USD
View
Retailer 3
-
$316 NZD
$178 USD
View
Price last confirmed 8 days ago
A
Retailer 4
-
$363 NZD
HK$1,600 HKD
View
A
Retailer 5
-
$537 NZD
€288 EUR
View
A
Retailer 6
-
$537 NZD
£238 GBP
View
A
Retailer 7
-
$570 NZD
$321 USD
View
B+
Retailer 8
-
$587 NZD
$331 USD
View
Retailer 9
-
$657 NZD
£292 GBP
View
Price last confirmed 15 days ago
B+
Retailer 10
-
$756 NZD
$426 USD
View
Retailer 11
-
$763 NZD
$430 USD
View
Price last confirmed 24 days ago
B+
Retailer 12
-
$784 NZD
$442 USD
View
B+
Retailer 13
-
$828 NZD
A$718 AUD
View
B+
Retailer 14
-
$860 NZD
SGD 655 SGD
View
B+
Retailer 15
-
$923 NZD
$520 USD
View
Retailer 16
-
$1,013 NZD
$571 USD
View
Price last confirmed 7 days ago
Most Expensive
B
MOH London
LG775620770 · Oct 26
$1,476 NZD
£655 GBP
View
16 more retailers have this diamond
Prices start from $254 NZDSave up to $1,222 NZD

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
$254 NZD