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Round|Lab Grown|IGI

1.09ct D SI1 Round Lab Grown Diamond

ID • D/SI1 • IGI LG698516538

Shape and cutting style on the report: Round brilliant

Certificate IGI LG698516538

Diamond specifications and retailer prices

From $195 AUD
$137 USD
As of October 29, 2026
Save $584 AUD (75%) vs most expensive(unlock to see where)
11 retailers carry this diamond
Most expensive: $1,246 AUD at Rare Carat · As of August 9, 2026
View at Rare Carat

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 LG698516538 or 698516538. Listed at 11 retailers as of October 27, 2026, with a 299% spread between the cheapest and most expensive listing. That is exactly the kind of price-discovery gap Carat Hunter was built to surface. 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 angle34.8°
Pavilion angle40.6°
OriginLab Grown
Grading LabIGI
CertificateIGI LG698516538
Dimensions6.58 × 6.63 × 4.07 mm
L/W Ratio1.01
Girdle conditionFaceted
Cert comments
This Laboratory Grown Diamond was created by Chemical Vapor Deposition (CVD) growth process Type IIa
Top View
6.58 mm6.63 mm1.09 ctD / SI1
OriginLab Grown
CutIdeal
PolishExcellent
SymmetryExcellent
FluorescenceNone
CertificateIGI LG698516538
Side View
Table 55.0%Crown 34.8°Girdle: MediumPavilion 40.6°Culet: NoneDepth 61.7%

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: $1,246 AUD|Low: $195 AUD|High: $2,359 AUD|Avg: $779 AUD
Rare Carat
Retailer 2
Retailer 3
Retailer 4
Retailer 5
Retailer 6
Retailer 7
Retailer 8
Retailer 9
Retailer 10
Retailer 11
Retailer 12
Retailer 13
October 30, 2026
Retailer 7$195 AUD
Retailer 3$242 AUD
Retailer 12$273 AUD
Retailer 6$410 AUD
Retailer 8$432 AUD
Retailer 10$440 AUD
Retailer 11$454 AUD
Retailer 2$480 AUD
Retailer 9$596 AUD
Retailer 13$779 AUD
Retailer 4$1,118 AUD
Rare Carat$1,246 AUD
Retailer 5$1,495 AUD

5 data points across 13 retailers

11 retailers$195 AUD to $779 AUD

A
Cheapest Retailer
-
$195 AUD
$137 USD
A
Retailer 2
-
$242 AUD
$170 USD
View
A
Retailer 3
-
$273 AUD
HK$1,500 HKD
View
A
Retailer 4
-
$410 AUD
£227 GBP
View
A
Retailer 5
-
$432 AUD
€289 EUR
View
A
Retailer 6
-
$440 AUD
$309 USD
View
B+
Retailer 7
-
$454 AUD
$319 USD
View
A
Retailer 8
-
$480 AUD
£265 GBP
View
B+
Retailer 9
-
$596 AUD
$419 USD
View
B+
Retailer 10
-
$779 AUD
$547 USD
View
Most Expensive
Rare Carat
1271316 · Aug 9
$1,246 AUD
$875 USD
View
Price last confirmed 81 days ago
10 more retailers have this diamond
Prices start from $195 AUDSave up to $584 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
$195 AUD